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Edit File : getid3.lib.php \| Size : 45.74 KB
<?php ///////////////////////////////////////////////////////////////// /// getID3() by James Heinrich <info@getid3.org> // // available at http://getid3.sourceforge.net // // or http://www.getid3.org // // also https://github.com/JamesHeinrich/getID3 // ///////////////////////////////////////////////////////////////// // // // getid3.lib.php - part of getID3() // // See readme.txt for more details // // /// ///////////////////////////////////////////////////////////////// class getid3_lib { public static function PrintHexBytes($string, $hex=true, $spaces=true, $htmlencoding='UTF-8') { $returnstring = ''; for ($i = 0; $i < strlen($string); $i++) { if ($hex) { $returnstring .= str_pad(dechex(ord($string[$i])), 2, '0', STR_PAD_LEFT); } else { $returnstring .= ' '.(preg_match("#[\x20-\x7E]#", $string[$i]) ? $string[$i] : '¤'); } if ($spaces) { $returnstring .= ' '; } } if (!empty($htmlencoding)) { if ($htmlencoding === true) { $htmlencoding = 'UTF-8'; // prior to getID3 v1.9.0 the function's 4th parameter was boolean } $returnstring = htmlentities($returnstring, ENT_QUOTES, $htmlencoding); } return $returnstring; } public static function trunc($floatnumber) { // truncates a floating-point number at the decimal point // returns int (if possible, otherwise float) if ($floatnumber >= 1) { $truncatednumber = floor($floatnumber); } elseif ($floatnumber <= -1) { $truncatednumber = ceil($floatnumber); } else { $truncatednumber = 0; } if (self::intValueSupported($truncatednumber)) { $truncatednumber = (int) $truncatednumber; } return $truncatednumber; } public static function safe_inc(&$variable, $increment=1) { if (isset($variable)) { $variable += $increment; } else { $variable = $increment; } return true; } public static function CastAsInt($floatnum) { // convert to float if not already $floatnum = (float) $floatnum; // convert a float to type int, only if possible if (self::trunc($floatnum) == $floatnum) { // it's not floating point if (self::intValueSupported($floatnum)) { // it's within int range $floatnum = (int) $floatnum; } } return $floatnum; } public static function intValueSupported($num) { // check if integers are 64-bit static $hasINT64 = null; if ($hasINT64 === null) { // 10x faster than is_null() $hasINT64 = is_int(pow(2, 31)); // 32-bit int are limited to (2^31)-1 if (!$hasINT64 && !defined('PHP_INT_MIN')) { define('PHP_INT_MIN', ~PHP_INT_MAX); } } // if integers are 64-bit - no other check required if ($hasINT64 \|\| (($num <= PHP_INT_MAX) && ($num >= PHP_INT_MIN))) { return true; } return false; } public static function DecimalizeFraction($fraction) { list($numerator, $denominator) = explode('/', $fraction); return $numerator / ($denominator ? $denominator : 1); } public static function DecimalBinary2Float($binarynumerator) { $numerator = self::Bin2Dec($binarynumerator); $denominator = self::Bin2Dec('1'.str_repeat('0', strlen($binarynumerator))); return ($numerator / $denominator); } public static function NormalizeBinaryPoint($binarypointnumber, $maxbits=52) { // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html if (strpos($binarypointnumber, '.') === false) { $binarypointnumber = '0.'.$binarypointnumber; } elseif ($binarypointnumber[0] == '.') { $binarypointnumber = '0'.$binarypointnumber; } $exponent = 0; while (($binarypointnumber[0] != '1') \|\| (substr($binarypointnumber, 1, 1) != '.')) { if (substr($binarypointnumber, 1, 1) == '.') { $exponent--; $binarypointnumber = substr($binarypointnumber, 2, 1).'.'.substr($binarypointnumber, 3); } else { $pointpos = strpos($binarypointnumber, '.'); $exponent += ($pointpos - 1); $binarypointnumber = str_replace('.', '', $binarypointnumber); $binarypointnumber = $binarypointnumber[0].'.'.substr($binarypointnumber, 1); } } $binarypointnumber = str_pad(substr($binarypointnumber, 0, $maxbits + 2), $maxbits + 2, '0', STR_PAD_RIGHT); return array('normalized'=>$binarypointnumber, 'exponent'=>(int) $exponent); } public static function Float2BinaryDecimal($floatvalue) { // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html $maxbits = 128; // to how many bits of precision should the calculations be taken? $intpart = self::trunc($floatvalue); $floatpart = abs($floatvalue - $intpart); $pointbitstring = ''; while (($floatpart != 0) && (strlen($pointbitstring) < $maxbits)) { $floatpart = 2; $pointbitstring .= (string) self::trunc($floatpart); $floatpart -= self::trunc($floatpart); } $binarypointnumber = decbin($intpart).'.'.$pointbitstring; return $binarypointnumber; } public static function Float2String($floatvalue, $bits) { // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee-expl.html switch ($bits) { case 32: $exponentbits = 8; $fractionbits = 23; break; case 64: $exponentbits = 11; $fractionbits = 52; break; default: return false; break; } if ($floatvalue >= 0) { $signbit = '0'; } else { $signbit = '1'; } $normalizedbinary = self::NormalizeBinaryPoint(self::Float2BinaryDecimal($floatvalue), $fractionbits); $biasedexponent = pow(2, $exponentbits - 1) - 1 + $normalizedbinary['exponent']; // (127 or 1023) +/- exponent $exponentbitstring = str_pad(decbin($biasedexponent), $exponentbits, '0', STR_PAD_LEFT); $fractionbitstring = str_pad(substr($normalizedbinary['normalized'], 2), $fractionbits, '0', STR_PAD_RIGHT); return self::BigEndian2String(self::Bin2Dec($signbit.$exponentbitstring.$fractionbitstring), $bits % 8, false); } public static function LittleEndian2Float($byteword) { return self::BigEndian2Float(strrev($byteword)); } public static function BigEndian2Float($byteword) { // ANSI/IEEE Standard 754-1985, Standard for Binary Floating Point Arithmetic // http://www.psc.edu/general/software/packages/ieee/ieee.html // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee.html $bitword = self::BigEndian2Bin($byteword); if (!$bitword) { return 0; } $signbit = $bitword[0]; switch (strlen($byteword) 8) { case 32: $exponentbits = 8; $fractionbits = 23; break; case 64: $exponentbits = 11; $fractionbits = 52; break; case 80: // 80-bit Apple SANE format // http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/ $exponentstring = substr($bitword, 1, 15); $isnormalized = intval($bitword[16]); $fractionstring = substr($bitword, 17, 63); $exponent = pow(2, self::Bin2Dec($exponentstring) - 16383); $fraction = $isnormalized + self::DecimalBinary2Float($fractionstring); $floatvalue = $exponent * $fraction; if ($signbit == '1') { $floatvalue = -1; } return $floatvalue; break; default: return false; break; } $exponentstring = substr($bitword, 1, $exponentbits); $fractionstring = substr($bitword, $exponentbits + 1, $fractionbits); $exponent = self::Bin2Dec($exponentstring); $fraction = self::Bin2Dec($fractionstring); if (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction != 0)) { // Not a Number $floatvalue = false; } elseif (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction == 0)) { if ($signbit == '1') { $floatvalue = '-infinity'; } else { $floatvalue = '+infinity'; } } elseif (($exponent == 0) && ($fraction == 0)) { if ($signbit == '1') { $floatvalue = -0; } else { $floatvalue = 0; } $floatvalue = ($signbit ? 0 : -0); } elseif (($exponent == 0) && ($fraction != 0)) { // These are 'unnormalized' values $floatvalue = pow(2, (-1 (pow(2, $exponentbits - 1) - 2))) * self::DecimalBinary2Float($fractionstring); if ($signbit == '1') { $floatvalue = -1; } } elseif ($exponent != 0) { $floatvalue = pow(2, ($exponent - (pow(2, $exponentbits - 1) - 1))) (1 + self::DecimalBinary2Float($fractionstring)); if ($signbit == '1') { $floatvalue = -1; } } return (float) $floatvalue; } public static function BigEndian2Int($byteword, $synchsafe=false, $signed=false) { $intvalue = 0; $bytewordlen = strlen($byteword); if ($bytewordlen == 0) { return false; } for ($i = 0; $i < $bytewordlen; $i++) { if ($synchsafe) { // disregard MSB, effectively 7-bit bytes //$intvalue = $intvalue \| (ord($byteword{$i}) & 0x7F) << (($bytewordlen - 1 - $i) 7); // faster, but runs into problems past 2^31 on 32-bit systems $intvalue += (ord($byteword[$i]) & 0x7F) * pow(2, ($bytewordlen - 1 - $i) * 7); } else { $intvalue += ord($byteword[$i]) * pow(256, ($bytewordlen - 1 - $i)); } } if ($signed && !$synchsafe) { // synchsafe ints are not allowed to be signed if ($bytewordlen <= PHP_INT_SIZE) { $signMaskBit = 0x80 << (8 * ($bytewordlen - 1)); if ($intvalue & $signMaskBit) { $intvalue = 0 - ($intvalue & ($signMaskBit - 1)); } } else { throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits ('.strlen($byteword).') in self::BigEndian2Int()'); } } return self::CastAsInt($intvalue); } public static function LittleEndian2Int($byteword, $signed=false) { return self::BigEndian2Int(strrev($byteword), false, $signed); } public static function LittleEndian2Bin($byteword) { return self::BigEndian2Bin(strrev($byteword)); } public static function BigEndian2Bin($byteword) { $binvalue = ''; $bytewordlen = strlen($byteword); for ($i = 0; $i < $bytewordlen; $i++) { $binvalue .= str_pad(decbin(ord($byteword[$i])), 8, '0', STR_PAD_LEFT); } return $binvalue; } public static function BigEndian2String($number, $minbytes=1, $synchsafe=false, $signed=false) { if ($number < 0) { throw new Exception('ERROR: self::BigEndian2String() does not support negative numbers'); } $maskbyte = (($synchsafe \|\| $signed) ? 0x7F : 0xFF); $intstring = ''; if ($signed) { if ($minbytes > PHP_INT_SIZE) { throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits in self::BigEndian2String()'); } $number = $number & (0x80 << (8 * ($minbytes - 1))); } while ($number != 0) { $quotient = ($number / ($maskbyte + 1)); $intstring = chr(ceil(($quotient - floor($quotient)) * $maskbyte)).$intstring; $number = floor($quotient); } return str_pad($intstring, $minbytes, "\x00", STR_PAD_LEFT); } public static function Dec2Bin($number) { while ($number >= 256) { $bytes[] = (($number / 256) - (floor($number / 256))) * 256; $number = floor($number / 256); } $bytes[] = $number; $binstring = ''; for ($i = 0; $i < count($bytes); $i++) { $binstring = (($i == count($bytes) - 1) ? decbin($bytes[$i]) : str_pad(decbin($bytes[$i]), 8, '0', STR_PAD_LEFT)).$binstring; } return $binstring; } public static function Bin2Dec($binstring, $signed=false) { $signmult = 1; if ($signed) { if ($binstring[0] == '1') { $signmult = -1; } $binstring = substr($binstring, 1); } $decvalue = 0; for ($i = 0; $i < strlen($binstring); $i++) { $decvalue += ((int) substr($binstring, strlen($binstring) - $i - 1, 1)) * pow(2, $i); } return self::CastAsInt($decvalue * $signmult); } public static function Bin2String($binstring) { // return 'hi' for input of '0110100001101001' $string = ''; $binstringreversed = strrev($binstring); for ($i = 0; $i < strlen($binstringreversed); $i += 8) { $string = chr(self::Bin2Dec(strrev(substr($binstringreversed, $i, 8)))).$string; } return $string; } public static function LittleEndian2String($number, $minbytes=1, $synchsafe=false) { $intstring = ''; while ($number > 0) { if ($synchsafe) { $intstring = $intstring.chr($number & 127); $number >>= 7; } else { $intstring = $intstring.chr($number & 255); $number >>= 8; } } return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT); } public static function array_merge_clobber($array1, $array2) { // written by kcØhireabilitycom // taken from http://www.php.net/manual/en/function.array-merge-recursive.php if (!is_array($array1) \|\| !is_array($array2)) { return false; } $newarray = $array1; foreach ($array2 as $key => $val) { if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) { $newarray[$key] = self::array_merge_clobber($newarray[$key], $val); } else { $newarray[$key] = $val; } } return $newarray; } public static function array_merge_noclobber($array1, $array2) { if (!is_array($array1) \|\| !is_array($array2)) { return false; } $newarray = $array1; foreach ($array2 as $key => $val) { if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) { $newarray[$key] = self::array_merge_noclobber($newarray[$key], $val); } elseif (!isset($newarray[$key])) { $newarray[$key] = $val; } } return $newarray; } public static function flipped_array_merge_noclobber($array1, $array2) { if (!is_array($array1) \|\| !is_array($array2)) { return false; } # naturally, this only works non-recursively $newarray = array_flip($array1); foreach (array_flip($array2) as $key => $val) { if (!isset($newarray[$key])) { $newarray[$key] = count($newarray); } } return array_flip($newarray); } public static function ksort_recursive(&$theArray) { ksort($theArray); foreach ($theArray as $key => $value) { if (is_array($value)) { self::ksort_recursive($theArray[$key]); } } return true; } public static function fileextension($filename, $numextensions=1) { if (strstr($filename, '.')) { $reversedfilename = strrev($filename); $offset = 0; for ($i = 0; $i < $numextensions; $i++) { $offset = strpos($reversedfilename, '.', $offset + 1); if ($offset === false) { return ''; } } return strrev(substr($reversedfilename, 0, $offset)); } return ''; } public static function PlaytimeString($seconds) { $sign = (($seconds < 0) ? '-' : ''); $seconds = round(abs($seconds)); $H = (int) floor( $seconds / 3600); $M = (int) floor(($seconds - (3600 $H) ) / 60); $S = (int) round( $seconds - (3600 * $H) - (60 * $M) ); return $sign.($H ? $H.':' : '').($H ? str_pad($M, 2, '0', STR_PAD_LEFT) : intval($M)).':'.str_pad($S, 2, 0, STR_PAD_LEFT); } public static function DateMac2Unix($macdate) { // Macintosh timestamp: seconds since 00:00h January 1, 1904 // UNIX timestamp: seconds since 00:00h January 1, 1970 return self::CastAsInt($macdate - 2082844800); } public static function FixedPoint8_8($rawdata) { return self::BigEndian2Int(substr($rawdata, 0, 1)) + (float) (self::BigEndian2Int(substr($rawdata, 1, 1)) / pow(2, 8)); } public static function FixedPoint16_16($rawdata) { return self::BigEndian2Int(substr($rawdata, 0, 2)) + (float) (self::BigEndian2Int(substr($rawdata, 2, 2)) / pow(2, 16)); } public static function FixedPoint2_30($rawdata) { $binarystring = self::BigEndian2Bin($rawdata); return self::Bin2Dec(substr($binarystring, 0, 2)) + (float) (self::Bin2Dec(substr($binarystring, 2, 30)) / pow(2, 30)); } public static function CreateDeepArray($ArrayPath, $Separator, $Value) { // assigns $Value to a nested array path: // $foo = self::CreateDeepArray('/path/to/my', '/', 'file.txt') // is the same as: // $foo = array('path'=>array('to'=>'array('my'=>array('file.txt')))); // or // $foo['path']['to']['my'] = 'file.txt'; $ArrayPath = ltrim($ArrayPath, $Separator); if (($pos = strpos($ArrayPath, $Separator)) !== false) { $ReturnedArray[substr($ArrayPath, 0, $pos)] = self::CreateDeepArray(substr($ArrayPath, $pos + 1), $Separator, $Value); } else { $ReturnedArray[$ArrayPath] = $Value; } return $ReturnedArray; } public static function array_max($arraydata, $returnkey=false) { $maxvalue = false; $maxkey = false; foreach ($arraydata as $key => $value) { if (!is_array($value)) { if ($value > $maxvalue) { $maxvalue = $value; $maxkey = $key; } } } return ($returnkey ? $maxkey : $maxvalue); } public static function array_min($arraydata, $returnkey=false) { $minvalue = false; $minkey = false; foreach ($arraydata as $key => $value) { if (!is_array($value)) { if ($value > $minvalue) { $minvalue = $value; $minkey = $key; } } } return ($returnkey ? $minkey : $minvalue); } public static function XML2array($XMLstring) { if (function_exists('simplexml_load_string') && function_exists('libxml_disable_entity_loader')) { // http://websec.io/2012/08/27/Preventing-XEE-in-PHP.html // https://core.trac.wordpress.org/changeset/29378 $loader = libxml_disable_entity_loader(true); $XMLobject = simplexml_load_string($XMLstring, 'SimpleXMLElement', LIBXML_NOENT); $return = self::SimpleXMLelement2array($XMLobject); libxml_disable_entity_loader($loader); return $return; } return false; } public static function SimpleXMLelement2array($XMLobject) { if (!is_object($XMLobject) && !is_array($XMLobject)) { return $XMLobject; } $XMLarray = (is_object($XMLobject) ? get_object_vars($XMLobject) : $XMLobject); foreach ($XMLarray as $key => $value) { $XMLarray[$key] = self::SimpleXMLelement2array($value); } return $XMLarray; } // Allan Hansen <ahØartemisdk> // self::md5_data() - returns md5sum for a file from startuing position to absolute end position public static function hash_data($file, $offset, $end, $algorithm) { static $tempdir = ''; if (!self::intValueSupported($end)) { return false; } switch ($algorithm) { case 'md5': $hash_function = 'md5_file'; $unix_call = 'md5sum'; $windows_call = 'md5sum.exe'; $hash_length = 32; break; case 'sha1': $hash_function = 'sha1_file'; $unix_call = 'sha1sum'; $windows_call = 'sha1sum.exe'; $hash_length = 40; break; default: throw new Exception('Invalid algorithm ('.$algorithm.') in self::hash_data()'); break; } $size = $end - $offset; while (true) { if (GETID3_OS_ISWINDOWS) { // It seems that sha1sum.exe for Windows only works on physical files, does not accept piped data // Fall back to create-temp-file method: if ($algorithm == 'sha1') { break; } $RequiredFiles = array('cygwin1.dll', 'head.exe', 'tail.exe', $windows_call); foreach ($RequiredFiles as $required_file) { if (!is_readable(GETID3_HELPERAPPSDIR.$required_file)) { // helper apps not available - fall back to old method break 2; } } $commandline = GETID3_HELPERAPPSDIR.'head.exe -c '.$end.' '.escapeshellarg(str_replace('/', DIRECTORY_SEPARATOR, $file)).' \| '; $commandline .= GETID3_HELPERAPPSDIR.'tail.exe -c '.$size.' \| '; $commandline .= GETID3_HELPERAPPSDIR.$windows_call; } else { $commandline = 'head -c'.$end.' '.escapeshellarg($file).' \| '; $commandline .= 'tail -c'.$size.' \| '; $commandline .= $unix_call; } if (preg_match('#(1\|ON)#i', ini_get('safe_mode'))) { //throw new Exception('PHP running in Safe Mode - backtick operator not available, using slower non-system-call '.$algorithm.' algorithm'); break; } return substr(`$commandline`, 0, $hash_length); } if (empty($tempdir)) { // yes this is ugly, feel free to suggest a better way require_once(dirname(__FILE__).'/getid3.php'); $getid3_temp = new getID3(); $tempdir = $getid3_temp->tempdir; unset($getid3_temp); } // try to create a temporary file in the system temp directory - invalid dirname should force to system temp dir if (($data_filename = tempnam($tempdir, 'gI3')) === false) { // can't find anywhere to create a temp file, just fail return false; } // Init $result = false; // copy parts of file try { self::CopyFileParts($file, $data_filename, $offset, $end - $offset); $result = $hash_function($data_filename); } catch (Exception $e) { throw new Exception('self::CopyFileParts() failed in getid_lib::hash_data(): '.$e->getMessage()); } unlink($data_filename); return $result; } public static function CopyFileParts($filename_source, $filename_dest, $offset, $length) { if (!self::intValueSupported($offset + $length)) { throw new Exception('cannot copy file portion, it extends beyond the '.round(PHP_INT_MAX / 1073741824).'GB limit'); } if (is_readable($filename_source) && is_file($filename_source) && ($fp_src = fopen($filename_source, 'rb'))) { if (($fp_dest = fopen($filename_dest, 'wb'))) { if (fseek($fp_src, $offset) == 0) { $byteslefttowrite = $length; while (($byteslefttowrite > 0) && ($buffer = fread($fp_src, min($byteslefttowrite, getID3::FREAD_BUFFER_SIZE)))) { $byteswritten = fwrite($fp_dest, $buffer, $byteslefttowrite); $byteslefttowrite -= $byteswritten; } return true; } else { throw new Exception('failed to seek to offset '.$offset.' in '.$filename_source); } fclose($fp_dest); } else { throw new Exception('failed to create file for writing '.$filename_dest); } fclose($fp_src); } else { throw new Exception('failed to open file for reading '.$filename_source); } return false; } public static function iconv_fallback_int_utf8($charval) { if ($charval < 128) { // 0bbbbbbb $newcharstring = chr($charval); } elseif ($charval < 2048) { // 110bbbbb 10bbbbbb $newcharstring = chr(($charval >> 6) \| 0xC0); $newcharstring .= chr(($charval & 0x3F) \| 0x80); } elseif ($charval < 65536) { // 1110bbbb 10bbbbbb 10bbbbbb $newcharstring = chr(($charval >> 12) \| 0xE0); $newcharstring .= chr(($charval >> 6) \| 0xC0); $newcharstring .= chr(($charval & 0x3F) \| 0x80); } else { // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb $newcharstring = chr(($charval >> 18) \| 0xF0); $newcharstring .= chr(($charval >> 12) \| 0xC0); $newcharstring .= chr(($charval >> 6) \| 0xC0); $newcharstring .= chr(($charval & 0x3F) \| 0x80); } return $newcharstring; } // ISO-8859-1 => UTF-8 public static function iconv_fallback_iso88591_utf8($string, $bom=false) { if (function_exists('utf8_encode')) { return utf8_encode($string); } // utf8_encode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support) $newcharstring = ''; if ($bom) { $newcharstring .= "\xEF\xBB\xBF"; } for ($i = 0; $i < strlen($string); $i++) { $charval = ord($string[$i]); $newcharstring .= self::iconv_fallback_int_utf8($charval); } return $newcharstring; } // ISO-8859-1 => UTF-16BE public static function iconv_fallback_iso88591_utf16be($string, $bom=false) { $newcharstring = ''; if ($bom) { $newcharstring .= "\xFE\xFF"; } for ($i = 0; $i < strlen($string); $i++) { $newcharstring .= "\x00".$string[$i]; } return $newcharstring; } // ISO-8859-1 => UTF-16LE public static function iconv_fallback_iso88591_utf16le($string, $bom=false) { $newcharstring = ''; if ($bom) { $newcharstring .= "\xFF\xFE"; } for ($i = 0; $i < strlen($string); $i++) { $newcharstring .= $string[$i]."\x00"; } return $newcharstring; } // ISO-8859-1 => UTF-16LE (BOM) public static function iconv_fallback_iso88591_utf16($string) { return self::iconv_fallback_iso88591_utf16le($string, true); } // UTF-8 => ISO-8859-1 public static function iconv_fallback_utf8_iso88591($string) { if (function_exists('utf8_decode')) { return utf8_decode($string); } // utf8_decode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support) $newcharstring = ''; $offset = 0; $stringlength = strlen($string); while ($offset < $stringlength) { if ((ord($string[$offset]) \| 0x07) == 0xF7) { // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb $charval = ((ord($string[($offset + 0)]) & 0x07) << 18) & ((ord($string[($offset + 1)]) & 0x3F) << 12) & ((ord($string[($offset + 2)]) & 0x3F) << 6) & (ord($string[($offset + 3)]) & 0x3F); $offset += 4; } elseif ((ord($string[$offset]) \| 0x0F) == 0xEF) { // 1110bbbb 10bbbbbb 10bbbbbb $charval = ((ord($string[($offset + 0)]) & 0x0F) << 12) & ((ord($string[($offset + 1)]) & 0x3F) << 6) & (ord($string[($offset + 2)]) & 0x3F); $offset += 3; } elseif ((ord($string[$offset]) \| 0x1F) == 0xDF) { // 110bbbbb 10bbbbbb $charval = ((ord($string[($offset + 0)]) & 0x1F) << 6) & (ord($string[($offset + 1)]) & 0x3F); $offset += 2; } elseif ((ord($string[$offset]) \| 0x7F) == 0x7F) { // 0bbbbbbb $charval = ord($string[$offset]); $offset += 1; } else { // error? throw some kind of warning here? $charval = false; $offset += 1; } if ($charval !== false) { $newcharstring .= (($charval < 256) ? chr($charval) : '?'); } } return $newcharstring; } // UTF-8 => UTF-16BE public static function iconv_fallback_utf8_utf16be($string, $bom=false) { $newcharstring = ''; if ($bom) { $newcharstring .= "\xFE\xFF"; } $offset = 0; $stringlength = strlen($string); while ($offset < $stringlength) { if ((ord($string[$offset]) \| 0x07) == 0xF7) { // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb $charval = ((ord($string[($offset + 0)]) & 0x07) << 18) & ((ord($string[($offset + 1)]) & 0x3F) << 12) & ((ord($string[($offset + 2)]) & 0x3F) << 6) & (ord($string[($offset + 3)]) & 0x3F); $offset += 4; } elseif ((ord($string[$offset]) \| 0x0F) == 0xEF) { // 1110bbbb 10bbbbbb 10bbbbbb $charval = ((ord($string[($offset + 0)]) & 0x0F) << 12) & ((ord($string[($offset + 1)]) & 0x3F) << 6) & (ord($string[($offset + 2)]) & 0x3F); $offset += 3; } elseif ((ord($string[$offset]) \| 0x1F) == 0xDF) { // 110bbbbb 10bbbbbb $charval = ((ord($string[($offset + 0)]) & 0x1F) << 6) & (ord($string[($offset + 1)]) & 0x3F); $offset += 2; } elseif ((ord($string[$offset]) \| 0x7F) == 0x7F) { // 0bbbbbbb $charval = ord($string[$offset]); $offset += 1; } else { // error? throw some kind of warning here? $charval = false; $offset += 1; } if ($charval !== false) { $newcharstring .= (($charval < 65536) ? self::BigEndian2String($charval, 2) : "\x00".'?'); } } return $newcharstring; } // UTF-8 => UTF-16LE public static function iconv_fallback_utf8_utf16le($string, $bom=false) { $newcharstring = ''; if ($bom) { $newcharstring .= "\xFF\xFE"; } $offset = 0; $stringlength = strlen($string); while ($offset < $stringlength) { if ((ord($string[$offset]) \| 0x07) == 0xF7) { // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb $charval = ((ord($string[($offset + 0)]) & 0x07) << 18) & ((ord($string[($offset + 1)]) & 0x3F) << 12) & ((ord($string[($offset + 2)]) & 0x3F) << 6) & (ord($string[($offset + 3)]) & 0x3F); $offset += 4; } elseif ((ord($string[$offset]) \| 0x0F) == 0xEF) { // 1110bbbb 10bbbbbb 10bbbbbb $charval = ((ord($string[($offset + 0)]) & 0x0F) << 12) & ((ord($string[($offset + 1)]) & 0x3F) << 6) & (ord($string[($offset + 2)]) & 0x3F); $offset += 3; } elseif ((ord($string[$offset]) \| 0x1F) == 0xDF) { // 110bbbbb 10bbbbbb $charval = ((ord($string[($offset + 0)]) & 0x1F) << 6) & (ord($string[($offset + 1)]) & 0x3F); $offset += 2; } elseif ((ord($string[$offset]) \| 0x7F) == 0x7F) { // 0bbbbbbb $charval = ord($string[$offset]); $offset += 1; } else { // error? maybe throw some warning here? $charval = false; $offset += 1; } if ($charval !== false) { $newcharstring .= (($charval < 65536) ? self::LittleEndian2String($charval, 2) : '?'."\x00"); } } return $newcharstring; } // UTF-8 => UTF-16LE (BOM) public static function iconv_fallback_utf8_utf16($string) { return self::iconv_fallback_utf8_utf16le($string, true); } // UTF-16BE => UTF-8 public static function iconv_fallback_utf16be_utf8($string) { if (substr($string, 0, 2) == "\xFE\xFF") { // strip BOM $string = substr($string, 2); } $newcharstring = ''; for ($i = 0; $i < strlen($string); $i += 2) { $charval = self::BigEndian2Int(substr($string, $i, 2)); $newcharstring .= self::iconv_fallback_int_utf8($charval); } return $newcharstring; } // UTF-16LE => UTF-8 public static function iconv_fallback_utf16le_utf8($string) { if (substr($string, 0, 2) == "\xFF\xFE") { // strip BOM $string = substr($string, 2); } $newcharstring = ''; for ($i = 0; $i < strlen($string); $i += 2) { $charval = self::LittleEndian2Int(substr($string, $i, 2)); $newcharstring .= self::iconv_fallback_int_utf8($charval); } return $newcharstring; } // UTF-16BE => ISO-8859-1 public static function iconv_fallback_utf16be_iso88591($string) { if (substr($string, 0, 2) == "\xFE\xFF") { // strip BOM $string = substr($string, 2); } $newcharstring = ''; for ($i = 0; $i < strlen($string); $i += 2) { $charval = self::BigEndian2Int(substr($string, $i, 2)); $newcharstring .= (($charval < 256) ? chr($charval) : '?'); } return $newcharstring; } // UTF-16LE => ISO-8859-1 public static function iconv_fallback_utf16le_iso88591($string) { if (substr($string, 0, 2) == "\xFF\xFE") { // strip BOM $string = substr($string, 2); } $newcharstring = ''; for ($i = 0; $i < strlen($string); $i += 2) { $charval = self::LittleEndian2Int(substr($string, $i, 2)); $newcharstring .= (($charval < 256) ? chr($charval) : '?'); } return $newcharstring; } // UTF-16 (BOM) => ISO-8859-1 public static function iconv_fallback_utf16_iso88591($string) { $bom = substr($string, 0, 2); if ($bom == "\xFE\xFF") { return self::iconv_fallback_utf16be_iso88591(substr($string, 2)); } elseif ($bom == "\xFF\xFE") { return self::iconv_fallback_utf16le_iso88591(substr($string, 2)); } return $string; } // UTF-16 (BOM) => UTF-8 public static function iconv_fallback_utf16_utf8($string) { $bom = substr($string, 0, 2); if ($bom == "\xFE\xFF") { return self::iconv_fallback_utf16be_utf8(substr($string, 2)); } elseif ($bom == "\xFF\xFE") { return self::iconv_fallback_utf16le_utf8(substr($string, 2)); } return $string; } public static function iconv_fallback($in_charset, $out_charset, $string) { if ($in_charset == $out_charset) { return $string; } // mb_convert_encoding() availble if (function_exists('mb_convert_encoding')) { if ($converted_string = @mb_convert_encoding($string, $out_charset, $in_charset)) { switch ($out_charset) { case 'ISO-8859-1': $converted_string = rtrim($converted_string, "\x00"); break; } return $converted_string; } return $string; } // iconv() availble else if (function_exists('iconv')) { if ($converted_string = @iconv($in_charset, $out_charset.'//TRANSLIT', $string)) { switch ($out_charset) { case 'ISO-8859-1': $converted_string = rtrim($converted_string, "\x00"); break; } return $converted_string; } // iconv() may sometimes fail with "illegal character in input string" error message // and return an empty string, but returning the unconverted string is more useful return $string; } // neither mb_convert_encoding or iconv() is available static $ConversionFunctionList = array(); if (empty($ConversionFunctionList)) { $ConversionFunctionList['ISO-8859-1']['UTF-8'] = 'iconv_fallback_iso88591_utf8'; $ConversionFunctionList['ISO-8859-1']['UTF-16'] = 'iconv_fallback_iso88591_utf16'; $ConversionFunctionList['ISO-8859-1']['UTF-16BE'] = 'iconv_fallback_iso88591_utf16be'; $ConversionFunctionList['ISO-8859-1']['UTF-16LE'] = 'iconv_fallback_iso88591_utf16le'; $ConversionFunctionList['UTF-8']['ISO-8859-1'] = 'iconv_fallback_utf8_iso88591'; $ConversionFunctionList['UTF-8']['UTF-16'] = 'iconv_fallback_utf8_utf16'; $ConversionFunctionList['UTF-8']['UTF-16BE'] = 'iconv_fallback_utf8_utf16be'; $ConversionFunctionList['UTF-8']['UTF-16LE'] = 'iconv_fallback_utf8_utf16le'; $ConversionFunctionList['UTF-16']['ISO-8859-1'] = 'iconv_fallback_utf16_iso88591'; $ConversionFunctionList['UTF-16']['UTF-8'] = 'iconv_fallback_utf16_utf8'; $ConversionFunctionList['UTF-16LE']['ISO-8859-1'] = 'iconv_fallback_utf16le_iso88591'; $ConversionFunctionList['UTF-16LE']['UTF-8'] = 'iconv_fallback_utf16le_utf8'; $ConversionFunctionList['UTF-16BE']['ISO-8859-1'] = 'iconv_fallback_utf16be_iso88591'; $ConversionFunctionList['UTF-16BE']['UTF-8'] = 'iconv_fallback_utf16be_utf8'; } if (isset($ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)])) { $ConversionFunction = $ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)]; return self::$ConversionFunction($string); } throw new Exception('PHP does not has mb_convert_encoding() or iconv() support - cannot convert from '.$in_charset.' to '.$out_charset); } public static function recursiveMultiByteCharString2HTML($data, $charset='ISO-8859-1') { if (is_string($data)) { return self::MultiByteCharString2HTML($data, $charset); } elseif (is_array($data)) { $return_data = array(); foreach ($data as $key => $value) { $return_data[$key] = self::recursiveMultiByteCharString2HTML($value, $charset); } return $return_data; } // integer, float, objects, resources, etc return $data; } public static function MultiByteCharString2HTML($string, $charset='ISO-8859-1') { $string = (string) $string; // in case trying to pass a numeric (float, int) string, would otherwise return an empty string $HTMLstring = ''; switch (strtolower($charset)) { case '1251': case '1252': case '866': case '932': case '936': case '950': case 'big5': case 'big5-hkscs': case 'cp1251': case 'cp1252': case 'cp866': case 'euc-jp': case 'eucjp': case 'gb2312': case 'ibm866': case 'iso-8859-1': case 'iso-8859-15': case 'iso8859-1': case 'iso8859-15': case 'koi8-r': case 'koi8-ru': case 'koi8r': case 'shift_jis': case 'sjis': case 'win-1251': case 'windows-1251': case 'windows-1252': $HTMLstring = htmlentities($string, ENT_COMPAT, $charset); break; case 'utf-8': $strlen = strlen($string); for ($i = 0; $i < $strlen; $i++) { $char_ord_val = ord($string[$i]); $charval = 0; if ($char_ord_val < 0x80) { $charval = $char_ord_val; } elseif ((($char_ord_val & 0xF0) >> 4) == 0x0F && $i+3 < $strlen) { $charval = (($char_ord_val & 0x07) << 18); $charval += ((ord($string[++$i]) & 0x3F) << 12); $charval += ((ord($string[++$i]) & 0x3F) << 6); $charval += (ord($string[++$i]) & 0x3F); } elseif ((($char_ord_val & 0xE0) >> 5) == 0x07 && $i+2 < $strlen) { $charval = (($char_ord_val & 0x0F) << 12); $charval += ((ord($string[++$i]) & 0x3F) << 6); $charval += (ord($string[++$i]) & 0x3F); } elseif ((($char_ord_val & 0xC0) >> 6) == 0x03 && $i+1 < $strlen) { $charval = (($char_ord_val & 0x1F) << 6); $charval += (ord($string[++$i]) & 0x3F); } if (($charval >= 32) && ($charval <= 127)) { $HTMLstring .= htmlentities(chr($charval)); } else { $HTMLstring .= '&#'.$charval.';'; } } break; case 'utf-16le': for ($i = 0; $i < strlen($string); $i += 2) { $charval = self::LittleEndian2Int(substr($string, $i, 2)); if (($charval >= 32) && ($charval <= 127)) { $HTMLstring .= chr($charval); } else { $HTMLstring .= '&#'.$charval.';'; } } break; case 'utf-16be': for ($i = 0; $i < strlen($string); $i += 2) { $charval = self::BigEndian2Int(substr($string, $i, 2)); if (($charval >= 32) && ($charval <= 127)) { $HTMLstring .= chr($charval); } else { $HTMLstring .= '&#'.$charval.';'; } } break; default: $HTMLstring = 'ERROR: Character set "'.$charset.'" not supported in MultiByteCharString2HTML()'; break; } return $HTMLstring; } public static function RGADnameLookup($namecode) { static $RGADname = array(); if (empty($RGADname)) { $RGADname[0] = 'not set'; $RGADname[1] = 'Track Gain Adjustment'; $RGADname[2] = 'Album Gain Adjustment'; } return (isset($RGADname[$namecode]) ? $RGADname[$namecode] : ''); } public static function RGADoriginatorLookup($originatorcode) { static $RGADoriginator = array(); if (empty($RGADoriginator)) { $RGADoriginator[0] = 'unspecified'; $RGADoriginator[1] = 'pre-set by artist/producer/mastering engineer'; $RGADoriginator[2] = 'set by user'; $RGADoriginator[3] = 'determined automatically'; } return (isset($RGADoriginator[$originatorcode]) ? $RGADoriginator[$originatorcode] : ''); } public static function RGADadjustmentLookup($rawadjustment, $signbit) { $adjustment = $rawadjustment / 10; if ($signbit == 1) { $adjustment = -1; } return (float) $adjustment; } public static function RGADgainString($namecode, $originatorcode, $replaygain) { if ($replaygain < 0) { $signbit = '1'; } else { $signbit = '0'; } $storedreplaygain = intval(round($replaygain * 10)); $gainstring = str_pad(decbin($namecode), 3, '0', STR_PAD_LEFT); $gainstring .= str_pad(decbin($originatorcode), 3, '0', STR_PAD_LEFT); $gainstring .= $signbit; $gainstring .= str_pad(decbin($storedreplaygain), 9, '0', STR_PAD_LEFT); return $gainstring; } public static function RGADamplitude2dB($amplitude) { return 20 * log10($amplitude); } public static function GetDataImageSize($imgData, &$imageinfo=array()) { static $tempdir = ''; if (empty($tempdir)) { if (function_exists('sys_get_temp_dir')) { $tempdir = sys_get_temp_dir(); // https://github.com/JamesHeinrich/getID3/issues/52 } // yes this is ugly, feel free to suggest a better way if (include_once(dirname(__FILE__).'/getid3.php')) { if ($getid3_temp = new getID3()) { if ($getid3_temp_tempdir = $getid3_temp->tempdir) { $tempdir = $getid3_temp_tempdir; } unset($getid3_temp, $getid3_temp_tempdir); } } } $GetDataImageSize = false; if ($tempfilename = tempnam($tempdir, 'gI3')) { if (is_writable($tempfilename) && is_file($tempfilename) && ($tmp = fopen($tempfilename, 'wb'))) { fwrite($tmp, $imgData); fclose($tmp); $GetDataImageSize = @getimagesize($tempfilename, $imageinfo); if (($GetDataImageSize === false) \|\| !isset($GetDataImageSize[0]) \|\| !isset($GetDataImageSize[1])) { return false; } $GetDataImageSize['height'] = $GetDataImageSize[0]; $GetDataImageSize['width'] = $GetDataImageSize[1]; } unlink($tempfilename); } return $GetDataImageSize; } public static function ImageExtFromMime($mime_type) { // temporary way, works OK for now, but should be reworked in the future return str_replace(array('image/', 'x-', 'jpeg'), array('', '', 'jpg'), $mime_type); } public static function ImageTypesLookup($imagetypeid) { static $ImageTypesLookup = array(); if (empty($ImageTypesLookup)) { $ImageTypesLookup[1] = 'gif'; $ImageTypesLookup[2] = 'jpeg'; $ImageTypesLookup[3] = 'png'; $ImageTypesLookup[4] = 'swf'; $ImageTypesLookup[5] = 'psd'; $ImageTypesLookup[6] = 'bmp'; $ImageTypesLookup[7] = 'tiff (little-endian)'; $ImageTypesLookup[8] = 'tiff (big-endian)'; $ImageTypesLookup[9] = 'jpc'; $ImageTypesLookup[10] = 'jp2'; $ImageTypesLookup[11] = 'jpx'; $ImageTypesLookup[12] = 'jb2'; $ImageTypesLookup[13] = 'swc'; $ImageTypesLookup[14] = 'iff'; } return (isset($ImageTypesLookup[$imagetypeid]) ? $ImageTypesLookup[$imagetypeid] : ''); } public static function CopyTagsToComments(&$ThisFileInfo) { // Copy all entries from ['tags'] into common ['comments'] if (!empty($ThisFileInfo['tags'])) { foreach ($ThisFileInfo['tags'] as $tagtype => $tagarray) { foreach ($tagarray as $tagname => $tagdata) { foreach ($tagdata as $key => $value) { if (!empty($value)) { if (empty($ThisFileInfo['comments'][$tagname])) { // fall through and append value } elseif ($tagtype == 'id3v1') { $newvaluelength = strlen(trim($value)); foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) { $oldvaluelength = strlen(trim($existingvalue)); if (($newvaluelength <= $oldvaluelength) && (substr($existingvalue, 0, $newvaluelength) == trim($value))) { // new value is identical but shorter-than (or equal-length to) one already in comments - skip break 2; } } } elseif (!is_array($value)) { $newvaluelength = strlen(trim($value)); foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) { $oldvaluelength = strlen(trim($existingvalue)); if ((strlen($existingvalue) > 10) && ($newvaluelength > $oldvaluelength) && (substr(trim($value), 0, strlen($existingvalue)) == $existingvalue)) { $ThisFileInfo['comments'][$tagname][$existingkey] = trim($value); //break 2; break; } } } if (is_array($value) \|\| empty($ThisFileInfo['comments'][$tagname]) \|\| !in_array(trim($value), $ThisFileInfo['comments'][$tagname])) { $value = (is_string($value) ? trim($value) : $value); if (!is_int($key) && !ctype_digit($key)) { $ThisFileInfo['comments'][$tagname][$key] = $value; } else { if (isset($ThisFileInfo['comments'][$tagname])) { $ThisFileInfo['comments'][$tagname] = array($value); } else { $ThisFileInfo['comments'][$tagname][] = $value; } } } } } } } // attempt to standardize spelling of returned keys $StandardizeFieldNames = array( 'tracknumber' => 'track_number', 'track' => 'track_number', ); foreach ($StandardizeFieldNames as $badkey => $goodkey) { if (array_key_exists($badkey, $ThisFileInfo['comments']) && !array_key_exists($goodkey, $ThisFileInfo['comments'])) { $ThisFileInfo['comments'][$goodkey] = $ThisFileInfo['comments'][$badkey]; unset($ThisFileInfo['comments'][$badkey]); } } // Copy to ['comments_html'] if (!empty($ThisFileInfo['comments'])) { foreach ($ThisFileInfo['comments'] as $field => $values) { if ($field == 'picture') { // pictures can take up a lot of space, and we don't need multiple copies of them // let there be a single copy in [comments][picture], and not elsewhere continue; } foreach ($values as $index => $value) { if (is_array($value)) { $ThisFileInfo['comments_html'][$field][$index] = $value; } else { $ThisFileInfo['comments_html'][$field][$index] = str_replace('', '', self::MultiByteCharString2HTML($value, $ThisFileInfo['encoding'])); } } } } } return true; } public static function EmbeddedLookup($key, $begin, $end, $file, $name) { // Cached static $cache; if (isset($cache[$file][$name])) { return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : ''); } // Init $keylength = strlen($key); $line_count = $end - $begin - 7; // Open php file $fp = fopen($file, 'r'); // Discard $begin lines for ($i = 0; $i < ($begin + 3); $i++) { fgets($fp, 1024); } // Loop thru line while (0 < $line_count--) { // Read line $line = ltrim(fgets($fp, 1024), "\t "); // METHOD A: only cache the matching key - less memory but slower on next lookup of not-previously-looked-up key //$keycheck = substr($line, 0, $keylength); //if ($key == $keycheck) { // $cache[$file][$name][$keycheck] = substr($line, $keylength + 1); // break; //} // METHOD B: cache all keys in this lookup - more memory but faster on next lookup of not-previously-looked-up key //$cache[$file][$name][substr($line, 0, $keylength)] = trim(substr($line, $keylength + 1)); $explodedLine = explode("\t", $line, 2); $ThisKey = (isset($explodedLine[0]) ? $explodedLine[0] : ''); $ThisValue = (isset($explodedLine[1]) ? $explodedLine[1] : ''); $cache[$file][$name][$ThisKey] = trim($ThisValue); } // Close and return fclose($fp); return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : ''); } public static function IncludeDependency($filename, $sourcefile, $DieOnFailure=false) { global $GETID3_ERRORARRAY; if (file_exists($filename)) { if (include_once($filename)) { return true; } else { $diemessage = basename($sourcefile).' depends on '.$filename.', which has errors'; } } else { $diemessage = basename($sourcefile).' depends on '.$filename.', which is missing'; } if ($DieOnFailure) { throw new Exception($diemessage); } else { $GETID3_ERRORARRAY[] = $diemessage; } return false; } public static function trimNullByte($string) { return trim($string, "\x00"); } public static function getFileSizeSyscall($path) { $filesize = false; if (GETID3_OS_ISWINDOWS) { if (class_exists('COM')) { // From PHP 5.3.15 and 5.4.5, COM and DOTNET is no longer built into the php core.you have to add COM support in php.ini: $filesystem = new COM('Scripting.FileSystemObject'); $file = $filesystem->GetFile($path); $filesize = $file->Size(); unset($filesystem, $file); } else { $commandline = 'for %I in ('.escapeshellarg($path).') do @echo %~zI'; } } else { $commandline = 'ls -l '.escapeshellarg($path).' \| awk \'{print $5}\''; } if (isset($commandline)) { $output = trim(`$commandline`); if (ctype_digit($output)) { $filesize = (float) $output; } } return $filesize; } /** * Workaround for Bug #37268 (https://bugs.php.net/bug.php?id=37268) * @param string $path A path. * @param string $suffix If the name component ends in suffix this will also be cut off. * @return string */ public static function mb_basename($path, $suffix = null) { $splited = preg_split('#/#', rtrim($path, '/ ')); return substr(basename('X'.$splited[count($splited) - 1], $suffix), 1); } } Back

Edit File : getid3.lib.php | Size : 45.74 KB

<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org>               //
//  available at http://getid3.sourceforge.net                 //
//            or http://www.getid3.org                         //
//          also https://github.com/JamesHeinrich/getID3       //
/////////////////////////////////////////////////////////////////
//                                                             //
// getid3.lib.php - part of getID3()                           //
// See readme.txt for more details                             //
//                                                            ///
/////////////////////////////////////////////////////////////////

class getid3_lib
{

public static function PrintHexBytes($string, $hex=true, $spaces=true, $htmlencoding='UTF-8') {
		$returnstring = '';
		for ($i = 0; $i < strlen($string); $i++) {
			if ($hex) {
				$returnstring .= str_pad(dechex(ord($string[$i])), 2, '0', STR_PAD_LEFT);
			} else {
				$returnstring .= ' '.(preg_match("#[\x20-\x7E]#", $string[$i]) ? $string[$i] : '¤');
			}
			if ($spaces) {
				$returnstring .= ' ';
			}
		}
		if (!empty($htmlencoding)) {
			if ($htmlencoding === true) {
				$htmlencoding = 'UTF-8'; // prior to getID3 v1.9.0 the function's 4th parameter was boolean
			}
			$returnstring = htmlentities($returnstring, ENT_QUOTES, $htmlencoding);
		}
		return $returnstring;
	}

public static function trunc($floatnumber) {
		// truncates a floating-point number at the decimal point
		// returns int (if possible, otherwise float)
		if ($floatnumber >= 1) {
			$truncatednumber = floor($floatnumber);
		} elseif ($floatnumber <= -1) {
			$truncatednumber = ceil($floatnumber);
		} else {
			$truncatednumber = 0;
		}
		if (self::intValueSupported($truncatednumber)) {
			$truncatednumber = (int) $truncatednumber;
		}
		return $truncatednumber;
	}

public static function safe_inc(&$variable, $increment=1) {
		if (isset($variable)) {
			$variable += $increment;
		} else {
			$variable = $increment;
		}
		return true;
	}

public static function CastAsInt($floatnum) {
		// convert to float if not already
		$floatnum = (float) $floatnum;

// convert a float to type int, only if possible
		if (self::trunc($floatnum) == $floatnum) {
			// it's not floating point
			if (self::intValueSupported($floatnum)) {
				// it's within int range
				$floatnum = (int) $floatnum;
			}
		}
		return $floatnum;
	}

public static function intValueSupported($num) {
		// check if integers are 64-bit
		static $hasINT64 = null;
		if ($hasINT64 === null) { // 10x faster than is_null()
			$hasINT64 = is_int(pow(2, 31)); // 32-bit int are limited to (2^31)-1
			if (!$hasINT64 && !defined('PHP_INT_MIN')) {
				define('PHP_INT_MIN', ~PHP_INT_MAX);
			}
		}
		// if integers are 64-bit - no other check required
		if ($hasINT64 || (($num <= PHP_INT_MAX) && ($num >= PHP_INT_MIN))) {
			return true;
		}
		return false;
	}

public static function DecimalizeFraction($fraction) {
		list($numerator, $denominator) = explode('/', $fraction);
		return $numerator / ($denominator ? $denominator : 1);
	}

public static function DecimalBinary2Float($binarynumerator) {
		$numerator   = self::Bin2Dec($binarynumerator);
		$denominator = self::Bin2Dec('1'.str_repeat('0', strlen($binarynumerator)));
		return ($numerator / $denominator);
	}

public static function NormalizeBinaryPoint($binarypointnumber, $maxbits=52) {
		// http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
		if (strpos($binarypointnumber, '.') === false) {
			$binarypointnumber = '0.'.$binarypointnumber;
		} elseif ($binarypointnumber[0] == '.') {
			$binarypointnumber = '0'.$binarypointnumber;
		}
		$exponent = 0;
		while (($binarypointnumber[0] != '1') || (substr($binarypointnumber, 1, 1) != '.')) {
			if (substr($binarypointnumber, 1, 1) == '.') {
				$exponent--;
				$binarypointnumber = substr($binarypointnumber, 2, 1).'.'.substr($binarypointnumber, 3);
			} else {
				$pointpos = strpos($binarypointnumber, '.');
				$exponent += ($pointpos - 1);
				$binarypointnumber = str_replace('.', '', $binarypointnumber);
				$binarypointnumber = $binarypointnumber[0].'.'.substr($binarypointnumber, 1);
			}
		}
		$binarypointnumber = str_pad(substr($binarypointnumber, 0, $maxbits + 2), $maxbits + 2, '0', STR_PAD_RIGHT);
		return array('normalized'=>$binarypointnumber, 'exponent'=>(int) $exponent);
	}

public static function Float2BinaryDecimal($floatvalue) {
		// http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
		$maxbits = 128; // to how many bits of precision should the calculations be taken?
		$intpart   = self::trunc($floatvalue);
		$floatpart = abs($floatvalue - $intpart);
		$pointbitstring = '';
		while (($floatpart != 0) && (strlen($pointbitstring) < $maxbits)) {
			$floatpart *= 2;
			$pointbitstring .= (string) self::trunc($floatpart);
			$floatpart -= self::trunc($floatpart);
		}
		$binarypointnumber = decbin($intpart).'.'.$pointbitstring;
		return $binarypointnumber;
	}

public static function Float2String($floatvalue, $bits) {
		// http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee-expl.html
		switch ($bits) {
			case 32:
				$exponentbits = 8;
				$fractionbits = 23;
				break;

case 64:
				$exponentbits = 11;
				$fractionbits = 52;
				break;

default:
				return false;
				break;
		}
		if ($floatvalue >= 0) {
			$signbit = '0';
		} else {
			$signbit = '1';
		}
		$normalizedbinary  = self::NormalizeBinaryPoint(self::Float2BinaryDecimal($floatvalue), $fractionbits);
		$biasedexponent    = pow(2, $exponentbits - 1) - 1 + $normalizedbinary['exponent']; // (127 or 1023) +/- exponent
		$exponentbitstring = str_pad(decbin($biasedexponent), $exponentbits, '0', STR_PAD_LEFT);
		$fractionbitstring = str_pad(substr($normalizedbinary['normalized'], 2), $fractionbits, '0', STR_PAD_RIGHT);

return self::BigEndian2String(self::Bin2Dec($signbit.$exponentbitstring.$fractionbitstring), $bits % 8, false);
	}

public static function LittleEndian2Float($byteword) {
		return self::BigEndian2Float(strrev($byteword));
	}

public static function BigEndian2Float($byteword) {
		// ANSI/IEEE Standard 754-1985, Standard for Binary Floating Point Arithmetic
		// http://www.psc.edu/general/software/packages/ieee/ieee.html
		// http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee.html

$bitword = self::BigEndian2Bin($byteword);
		if (!$bitword) {
			return 0;
		}
		$signbit = $bitword[0];

switch (strlen($byteword) * 8) {
			case 32:
				$exponentbits = 8;
				$fractionbits = 23;
				break;

case 64:
				$exponentbits = 11;
				$fractionbits = 52;
				break;

case 80:
				// 80-bit Apple SANE format
				// http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/
				$exponentstring = substr($bitword, 1, 15);
				$isnormalized = intval($bitword[16]);
				$fractionstring = substr($bitword, 17, 63);
				$exponent = pow(2, self::Bin2Dec($exponentstring) - 16383);
				$fraction = $isnormalized + self::DecimalBinary2Float($fractionstring);
				$floatvalue = $exponent * $fraction;
				if ($signbit == '1') {
					$floatvalue *= -1;
				}
				return $floatvalue;
				break;

default:
				return false;
				break;
		}
		$exponentstring = substr($bitword, 1, $exponentbits);
		$fractionstring = substr($bitword, $exponentbits + 1, $fractionbits);
		$exponent = self::Bin2Dec($exponentstring);
		$fraction = self::Bin2Dec($fractionstring);

if (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction != 0)) {
			// Not a Number
			$floatvalue = false;
		} elseif (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction == 0)) {
			if ($signbit == '1') {
				$floatvalue = '-infinity';
			} else {
				$floatvalue = '+infinity';
			}
		} elseif (($exponent == 0) && ($fraction == 0)) {
			if ($signbit == '1') {
				$floatvalue = -0;
			} else {
				$floatvalue = 0;
			}
			$floatvalue = ($signbit ? 0 : -0);
		} elseif (($exponent == 0) && ($fraction != 0)) {
			// These are 'unnormalized' values
			$floatvalue = pow(2, (-1 * (pow(2, $exponentbits - 1) - 2))) * self::DecimalBinary2Float($fractionstring);
			if ($signbit == '1') {
				$floatvalue *= -1;
			}
		} elseif ($exponent != 0) {
			$floatvalue = pow(2, ($exponent - (pow(2, $exponentbits - 1) - 1))) * (1 + self::DecimalBinary2Float($fractionstring));
			if ($signbit == '1') {
				$floatvalue *= -1;
			}
		}
		return (float) $floatvalue;
	}

public static function BigEndian2Int($byteword, $synchsafe=false, $signed=false) {
		$intvalue = 0;
		$bytewordlen = strlen($byteword);
		if ($bytewordlen == 0) {
			return false;
		}
		for ($i = 0; $i < $bytewordlen; $i++) {
			if ($synchsafe) { // disregard MSB, effectively 7-bit bytes
				//$intvalue = $intvalue | (ord($byteword{$i}) & 0x7F) << (($bytewordlen - 1 - $i) * 7); // faster, but runs into problems past 2^31 on 32-bit systems
				$intvalue += (ord($byteword[$i]) & 0x7F) * pow(2, ($bytewordlen - 1 - $i) * 7);
			} else {
				$intvalue += ord($byteword[$i]) * pow(256, ($bytewordlen - 1 - $i));
			}
		}
		if ($signed && !$synchsafe) {
			// synchsafe ints are not allowed to be signed
			if ($bytewordlen <= PHP_INT_SIZE) {
				$signMaskBit = 0x80 << (8 * ($bytewordlen - 1));
				if ($intvalue & $signMaskBit) {
					$intvalue = 0 - ($intvalue & ($signMaskBit - 1));
				}
			} else {
				throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits ('.strlen($byteword).') in self::BigEndian2Int()');
			}
		}
		return self::CastAsInt($intvalue);
	}

public static function LittleEndian2Int($byteword, $signed=false) {
		return self::BigEndian2Int(strrev($byteword), false, $signed);
	}

public static function LittleEndian2Bin($byteword) {
		return self::BigEndian2Bin(strrev($byteword));
	}

public static function BigEndian2Bin($byteword) {
		$binvalue = '';
		$bytewordlen = strlen($byteword);
		for ($i = 0; $i < $bytewordlen; $i++) {
			$binvalue .= str_pad(decbin(ord($byteword[$i])), 8, '0', STR_PAD_LEFT);
		}
		return $binvalue;
	}

public static function BigEndian2String($number, $minbytes=1, $synchsafe=false, $signed=false) {
		if ($number < 0) {
			throw new Exception('ERROR: self::BigEndian2String() does not support negative numbers');
		}
		$maskbyte = (($synchsafe || $signed) ? 0x7F : 0xFF);
		$intstring = '';
		if ($signed) {
			if ($minbytes > PHP_INT_SIZE) {
				throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits in self::BigEndian2String()');
			}
			$number = $number & (0x80 << (8 * ($minbytes - 1)));
		}
		while ($number != 0) {
			$quotient = ($number / ($maskbyte + 1));
			$intstring = chr(ceil(($quotient - floor($quotient)) * $maskbyte)).$intstring;
			$number = floor($quotient);
		}
		return str_pad($intstring, $minbytes, "\x00", STR_PAD_LEFT);
	}

public static function Dec2Bin($number) {
		while ($number >= 256) {
			$bytes[] = (($number / 256) - (floor($number / 256))) * 256;
			$number = floor($number / 256);
		}
		$bytes[] = $number;
		$binstring = '';
		for ($i = 0; $i < count($bytes); $i++) {
			$binstring = (($i == count($bytes) - 1) ? decbin($bytes[$i]) : str_pad(decbin($bytes[$i]), 8, '0', STR_PAD_LEFT)).$binstring;
		}
		return $binstring;
	}

public static function Bin2Dec($binstring, $signed=false) {
		$signmult = 1;
		if ($signed) {
			if ($binstring[0] == '1') {
				$signmult = -1;
			}
			$binstring = substr($binstring, 1);
		}
		$decvalue = 0;
		for ($i = 0; $i < strlen($binstring); $i++) {
			$decvalue += ((int) substr($binstring, strlen($binstring) - $i - 1, 1)) * pow(2, $i);
		}
		return self::CastAsInt($decvalue * $signmult);
	}

public static function Bin2String($binstring) {
		// return 'hi' for input of '0110100001101001'
		$string = '';
		$binstringreversed = strrev($binstring);
		for ($i = 0; $i < strlen($binstringreversed); $i += 8) {
			$string = chr(self::Bin2Dec(strrev(substr($binstringreversed, $i, 8)))).$string;
		}
		return $string;
	}

public static function LittleEndian2String($number, $minbytes=1, $synchsafe=false) {
		$intstring = '';
		while ($number > 0) {
			if ($synchsafe) {
				$intstring = $intstring.chr($number & 127);
				$number >>= 7;
			} else {
				$intstring = $intstring.chr($number & 255);
				$number >>= 8;
			}
		}
		return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT);
	}

public static function array_merge_clobber($array1, $array2) {
		// written by kcØhireability*com
		// taken from http://www.php.net/manual/en/function.array-merge-recursive.php
		if (!is_array($array1) || !is_array($array2)) {
			return false;
		}
		$newarray = $array1;
		foreach ($array2 as $key => $val) {
			if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {
				$newarray[$key] = self::array_merge_clobber($newarray[$key], $val);
			} else {
				$newarray[$key] = $val;
			}
		}
		return $newarray;
	}

public static function array_merge_noclobber($array1, $array2) {
		if (!is_array($array1) || !is_array($array2)) {
			return false;
		}
		$newarray = $array1;
		foreach ($array2 as $key => $val) {
			if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {
				$newarray[$key] = self::array_merge_noclobber($newarray[$key], $val);
			} elseif (!isset($newarray[$key])) {
				$newarray[$key] = $val;
			}
		}
		return $newarray;
	}

public static function flipped_array_merge_noclobber($array1, $array2) {
		if (!is_array($array1) || !is_array($array2)) {
			return false;
		}
		# naturally, this only works non-recursively
		$newarray = array_flip($array1);
		foreach (array_flip($array2) as $key => $val) {
			if (!isset($newarray[$key])) {
				$newarray[$key] = count($newarray);
			}
		}
		return array_flip($newarray);
	}

public static function ksort_recursive(&$theArray) {
		ksort($theArray);
		foreach ($theArray as $key => $value) {
			if (is_array($value)) {
				self::ksort_recursive($theArray[$key]);
			}
		}
		return true;
	}

public static function fileextension($filename, $numextensions=1) {
		if (strstr($filename, '.')) {
			$reversedfilename = strrev($filename);
			$offset = 0;
			for ($i = 0; $i < $numextensions; $i++) {
				$offset = strpos($reversedfilename, '.', $offset + 1);
				if ($offset === false) {
					return '';
				}
			}
			return strrev(substr($reversedfilename, 0, $offset));
		}
		return '';
	}

public static function PlaytimeString($seconds) {
		$sign = (($seconds < 0) ? '-' : '');
		$seconds = round(abs($seconds));
		$H = (int) floor( $seconds                            / 3600);
		$M = (int) floor(($seconds - (3600 * $H)            ) /   60);
		$S = (int) round( $seconds - (3600 * $H) - (60 * $M)        );
		return $sign.($H ? $H.':' : '').($H ? str_pad($M, 2, '0', STR_PAD_LEFT) : intval($M)).':'.str_pad($S, 2, 0, STR_PAD_LEFT);
	}

public static function DateMac2Unix($macdate) {
		// Macintosh timestamp: seconds since 00:00h January 1, 1904
		// UNIX timestamp:      seconds since 00:00h January 1, 1970
		return self::CastAsInt($macdate - 2082844800);
	}

public static function FixedPoint8_8($rawdata) {
		return self::BigEndian2Int(substr($rawdata, 0, 1)) + (float) (self::BigEndian2Int(substr($rawdata, 1, 1)) / pow(2, 8));
	}

public static function FixedPoint16_16($rawdata) {
		return self::BigEndian2Int(substr($rawdata, 0, 2)) + (float) (self::BigEndian2Int(substr($rawdata, 2, 2)) / pow(2, 16));
	}

public static function FixedPoint2_30($rawdata) {
		$binarystring = self::BigEndian2Bin($rawdata);
		return self::Bin2Dec(substr($binarystring, 0, 2)) + (float) (self::Bin2Dec(substr($binarystring, 2, 30)) / pow(2, 30));
	}

public static function CreateDeepArray($ArrayPath, $Separator, $Value) {
		// assigns $Value to a nested array path:
		//   $foo = self::CreateDeepArray('/path/to/my', '/', 'file.txt')
		// is the same as:
		//   $foo = array('path'=>array('to'=>'array('my'=>array('file.txt'))));
		// or
		//   $foo['path']['to']['my'] = 'file.txt';
		$ArrayPath = ltrim($ArrayPath, $Separator);
		if (($pos = strpos($ArrayPath, $Separator)) !== false) {
			$ReturnedArray[substr($ArrayPath, 0, $pos)] = self::CreateDeepArray(substr($ArrayPath, $pos + 1), $Separator, $Value);
		} else {
			$ReturnedArray[$ArrayPath] = $Value;
		}
		return $ReturnedArray;
	}

public static function array_max($arraydata, $returnkey=false) {
		$maxvalue = false;
		$maxkey = false;
		foreach ($arraydata as $key => $value) {
			if (!is_array($value)) {
				if ($value > $maxvalue) {
					$maxvalue = $value;
					$maxkey = $key;
				}
			}
		}
		return ($returnkey ? $maxkey : $maxvalue);
	}

public static function array_min($arraydata, $returnkey=false) {
		$minvalue = false;
		$minkey = false;
		foreach ($arraydata as $key => $value) {
			if (!is_array($value)) {
				if ($value > $minvalue) {
					$minvalue = $value;
					$minkey = $key;
				}
			}
		}
		return ($returnkey ? $minkey : $minvalue);
	}

public static function XML2array($XMLstring) {
		if (function_exists('simplexml_load_string') && function_exists('libxml_disable_entity_loader')) {
			// http://websec.io/2012/08/27/Preventing-XEE-in-PHP.html
			// https://core.trac.wordpress.org/changeset/29378
			$loader = libxml_disable_entity_loader(true);
			$XMLobject = simplexml_load_string($XMLstring, 'SimpleXMLElement', LIBXML_NOENT);
			$return = self::SimpleXMLelement2array($XMLobject);
			libxml_disable_entity_loader($loader);
			return $return;
		}
		return false;
	}

public static function SimpleXMLelement2array($XMLobject) {
		if (!is_object($XMLobject) && !is_array($XMLobject)) {
			return $XMLobject;
		}
		$XMLarray = (is_object($XMLobject) ? get_object_vars($XMLobject) : $XMLobject);
		foreach ($XMLarray as $key => $value) {
			$XMLarray[$key] = self::SimpleXMLelement2array($value);
		}
		return $XMLarray;
	}

// Allan Hansen <ahØartemis*dk>
	// self::md5_data() - returns md5sum for a file from startuing position to absolute end position
	public static function hash_data($file, $offset, $end, $algorithm) {
		static $tempdir = '';
		if (!self::intValueSupported($end)) {
			return false;
		}
		switch ($algorithm) {
			case 'md5':
				$hash_function = 'md5_file';
				$unix_call     = 'md5sum';
				$windows_call  = 'md5sum.exe';
				$hash_length   = 32;
				break;

case 'sha1':
				$hash_function = 'sha1_file';
				$unix_call     = 'sha1sum';
				$windows_call  = 'sha1sum.exe';
				$hash_length   = 40;
				break;

default:
				throw new Exception('Invalid algorithm ('.$algorithm.') in self::hash_data()');
				break;
		}
		$size = $end - $offset;
		while (true) {
			if (GETID3_OS_ISWINDOWS) {

// It seems that sha1sum.exe for Windows only works on physical files, does not accept piped data
				// Fall back to create-temp-file method:
				if ($algorithm == 'sha1') {
					break;
				}

$RequiredFiles = array('cygwin1.dll', 'head.exe', 'tail.exe', $windows_call);
				foreach ($RequiredFiles as $required_file) {
					if (!is_readable(GETID3_HELPERAPPSDIR.$required_file)) {
						// helper apps not available - fall back to old method
						break 2;
					}
				}
				$commandline  = GETID3_HELPERAPPSDIR.'head.exe -c '.$end.' '.escapeshellarg(str_replace('/', DIRECTORY_SEPARATOR, $file)).' | ';
				$commandline .= GETID3_HELPERAPPSDIR.'tail.exe -c '.$size.' | ';
				$commandline .= GETID3_HELPERAPPSDIR.$windows_call;

} else {

$commandline  = 'head -c'.$end.' '.escapeshellarg($file).' | ';
				$commandline .= 'tail -c'.$size.' | ';
				$commandline .= $unix_call;

}
			if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) {
				//throw new Exception('PHP running in Safe Mode - backtick operator not available, using slower non-system-call '.$algorithm.' algorithm');
				break;
			}
			return substr(`$commandline`, 0, $hash_length);
		}

if (empty($tempdir)) {
			// yes this is ugly, feel free to suggest a better way
			require_once(dirname(__FILE__).'/getid3.php');
			$getid3_temp = new getID3();
			$tempdir = $getid3_temp->tempdir;
			unset($getid3_temp);
		}
		// try to create a temporary file in the system temp directory - invalid dirname should force to system temp dir
		if (($data_filename = tempnam($tempdir, 'gI3')) === false) {
			// can't find anywhere to create a temp file, just fail
			return false;
		}

// Init
		$result = false;

// copy parts of file
		try {
			self::CopyFileParts($file, $data_filename, $offset, $end - $offset);
			$result = $hash_function($data_filename);
		} catch (Exception $e) {
			throw new Exception('self::CopyFileParts() failed in getid_lib::hash_data(): '.$e->getMessage());
		}
		unlink($data_filename);
		return $result;
	}

public static function CopyFileParts($filename_source, $filename_dest, $offset, $length) {
		if (!self::intValueSupported($offset + $length)) {
			throw new Exception('cannot copy file portion, it extends beyond the '.round(PHP_INT_MAX / 1073741824).'GB limit');
		}
		if (is_readable($filename_source) && is_file($filename_source) && ($fp_src = fopen($filename_source, 'rb'))) {
			if (($fp_dest = fopen($filename_dest, 'wb'))) {
				if (fseek($fp_src, $offset) == 0) {
					$byteslefttowrite = $length;
					while (($byteslefttowrite > 0) && ($buffer = fread($fp_src, min($byteslefttowrite, getID3::FREAD_BUFFER_SIZE)))) {
						$byteswritten = fwrite($fp_dest, $buffer, $byteslefttowrite);
						$byteslefttowrite -= $byteswritten;
					}
					return true;
				} else {
					throw new Exception('failed to seek to offset '.$offset.' in '.$filename_source);
				}
				fclose($fp_dest);
			} else {
				throw new Exception('failed to create file for writing '.$filename_dest);
			}
			fclose($fp_src);
		} else {
			throw new Exception('failed to open file for reading '.$filename_source);
		}
		return false;
	}

public static function iconv_fallback_int_utf8($charval) {
		if ($charval < 128) {
			// 0bbbbbbb
			$newcharstring = chr($charval);
		} elseif ($charval < 2048) {
			// 110bbbbb 10bbbbbb
			$newcharstring  = chr(($charval >>   6) | 0xC0);
			$newcharstring .= chr(($charval & 0x3F) | 0x80);
		} elseif ($charval < 65536) {
			// 1110bbbb 10bbbbbb 10bbbbbb
			$newcharstring  = chr(($charval >>  12) | 0xE0);
			$newcharstring .= chr(($charval >>   6) | 0xC0);
			$newcharstring .= chr(($charval & 0x3F) | 0x80);
		} else {
			// 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
			$newcharstring  = chr(($charval >>  18) | 0xF0);
			$newcharstring .= chr(($charval >>  12) | 0xC0);
			$newcharstring .= chr(($charval >>   6) | 0xC0);
			$newcharstring .= chr(($charval & 0x3F) | 0x80);
		}
		return $newcharstring;
	}

// ISO-8859-1 => UTF-8
	public static function iconv_fallback_iso88591_utf8($string, $bom=false) {
		if (function_exists('utf8_encode')) {
			return utf8_encode($string);
		}
		// utf8_encode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support)
		$newcharstring = '';
		if ($bom) {
			$newcharstring .= "\xEF\xBB\xBF";
		}
		for ($i = 0; $i < strlen($string); $i++) {
			$charval = ord($string[$i]);
			$newcharstring .= self::iconv_fallback_int_utf8($charval);
		}
		return $newcharstring;
	}

// ISO-8859-1 => UTF-16BE
	public static function iconv_fallback_iso88591_utf16be($string, $bom=false) {
		$newcharstring = '';
		if ($bom) {
			$newcharstring .= "\xFE\xFF";
		}
		for ($i = 0; $i < strlen($string); $i++) {
			$newcharstring .= "\x00".$string[$i];
		}
		return $newcharstring;
	}

// ISO-8859-1 => UTF-16LE
	public static function iconv_fallback_iso88591_utf16le($string, $bom=false) {
		$newcharstring = '';
		if ($bom) {
			$newcharstring .= "\xFF\xFE";
		}
		for ($i = 0; $i < strlen($string); $i++) {
			$newcharstring .= $string[$i]."\x00";
		}
		return $newcharstring;
	}

// ISO-8859-1 => UTF-16LE (BOM)
	public static function iconv_fallback_iso88591_utf16($string) {
		return self::iconv_fallback_iso88591_utf16le($string, true);
	}

// UTF-8 => ISO-8859-1
	public static function iconv_fallback_utf8_iso88591($string) {
		if (function_exists('utf8_decode')) {
			return utf8_decode($string);
		}
		// utf8_decode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support)
		$newcharstring = '';
		$offset = 0;
		$stringlength = strlen($string);
		while ($offset < $stringlength) {
			if ((ord($string[$offset]) | 0x07) == 0xF7) {
				// 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
				$charval = ((ord($string[($offset + 0)]) & 0x07) << 18) &
						   ((ord($string[($offset + 1)]) & 0x3F) << 12) &
						   ((ord($string[($offset + 2)]) & 0x3F) <<  6) &
							(ord($string[($offset + 3)]) & 0x3F);
				$offset += 4;
			} elseif ((ord($string[$offset]) | 0x0F) == 0xEF) {
				// 1110bbbb 10bbbbbb 10bbbbbb
				$charval = ((ord($string[($offset + 0)]) & 0x0F) << 12) &
						   ((ord($string[($offset + 1)]) & 0x3F) <<  6) &
							(ord($string[($offset + 2)]) & 0x3F);
				$offset += 3;
			} elseif ((ord($string[$offset]) | 0x1F) == 0xDF) {
				// 110bbbbb 10bbbbbb
				$charval = ((ord($string[($offset + 0)]) & 0x1F) <<  6) &
							(ord($string[($offset + 1)]) & 0x3F);
				$offset += 2;
			} elseif ((ord($string[$offset]) | 0x7F) == 0x7F) {
				// 0bbbbbbb
				$charval = ord($string[$offset]);
				$offset += 1;
			} else {
				// error? throw some kind of warning here?
				$charval = false;
				$offset += 1;
			}
			if ($charval !== false) {
				$newcharstring .= (($charval < 256) ? chr($charval) : '?');
			}
		}
		return $newcharstring;
	}

// UTF-8 => UTF-16BE
	public static function iconv_fallback_utf8_utf16be($string, $bom=false) {
		$newcharstring = '';
		if ($bom) {
			$newcharstring .= "\xFE\xFF";
		}
		$offset = 0;
		$stringlength = strlen($string);
		while ($offset < $stringlength) {
			if ((ord($string[$offset]) | 0x07) == 0xF7) {
				// 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
				$charval = ((ord($string[($offset + 0)]) & 0x07) << 18) &
						   ((ord($string[($offset + 1)]) & 0x3F) << 12) &
						   ((ord($string[($offset + 2)]) & 0x3F) <<  6) &
							(ord($string[($offset + 3)]) & 0x3F);
				$offset += 4;
			} elseif ((ord($string[$offset]) | 0x0F) == 0xEF) {
				// 1110bbbb 10bbbbbb 10bbbbbb
				$charval = ((ord($string[($offset + 0)]) & 0x0F) << 12) &
						   ((ord($string[($offset + 1)]) & 0x3F) <<  6) &
							(ord($string[($offset + 2)]) & 0x3F);
				$offset += 3;
			} elseif ((ord($string[$offset]) | 0x1F) == 0xDF) {
				// 110bbbbb 10bbbbbb
				$charval = ((ord($string[($offset + 0)]) & 0x1F) <<  6) &
							(ord($string[($offset + 1)]) & 0x3F);
				$offset += 2;
			} elseif ((ord($string[$offset]) | 0x7F) == 0x7F) {
				// 0bbbbbbb
				$charval = ord($string[$offset]);
				$offset += 1;
			} else {
				// error? throw some kind of warning here?
				$charval = false;
				$offset += 1;
			}
			if ($charval !== false) {
				$newcharstring .= (($charval < 65536) ? self::BigEndian2String($charval, 2) : "\x00".'?');
			}
		}
		return $newcharstring;
	}

// UTF-8 => UTF-16LE
	public static function iconv_fallback_utf8_utf16le($string, $bom=false) {
		$newcharstring = '';
		if ($bom) {
			$newcharstring .= "\xFF\xFE";
		}
		$offset = 0;
		$stringlength = strlen($string);
		while ($offset < $stringlength) {
			if ((ord($string[$offset]) | 0x07) == 0xF7) {
				// 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
				$charval = ((ord($string[($offset + 0)]) & 0x07) << 18) &
						   ((ord($string[($offset + 1)]) & 0x3F) << 12) &
						   ((ord($string[($offset + 2)]) & 0x3F) <<  6) &
							(ord($string[($offset + 3)]) & 0x3F);
				$offset += 4;
			} elseif ((ord($string[$offset]) | 0x0F) == 0xEF) {
				// 1110bbbb 10bbbbbb 10bbbbbb
				$charval = ((ord($string[($offset + 0)]) & 0x0F) << 12) &
						   ((ord($string[($offset + 1)]) & 0x3F) <<  6) &
							(ord($string[($offset + 2)]) & 0x3F);
				$offset += 3;
			} elseif ((ord($string[$offset]) | 0x1F) == 0xDF) {
				// 110bbbbb 10bbbbbb
				$charval = ((ord($string[($offset + 0)]) & 0x1F) <<  6) &
							(ord($string[($offset + 1)]) & 0x3F);
				$offset += 2;
			} elseif ((ord($string[$offset]) | 0x7F) == 0x7F) {
				// 0bbbbbbb
				$charval = ord($string[$offset]);
				$offset += 1;
			} else {
				// error? maybe throw some warning here?
				$charval = false;
				$offset += 1;
			}
			if ($charval !== false) {
				$newcharstring .= (($charval < 65536) ? self::LittleEndian2String($charval, 2) : '?'."\x00");
			}
		}
		return $newcharstring;
	}

// UTF-8 => UTF-16LE (BOM)
	public static function iconv_fallback_utf8_utf16($string) {
		return self::iconv_fallback_utf8_utf16le($string, true);
	}

// UTF-16BE => UTF-8
	public static function iconv_fallback_utf16be_utf8($string) {
		if (substr($string, 0, 2) == "\xFE\xFF") {
			// strip BOM
			$string = substr($string, 2);
		}
		$newcharstring = '';
		for ($i = 0; $i < strlen($string); $i += 2) {
			$charval = self::BigEndian2Int(substr($string, $i, 2));
			$newcharstring .= self::iconv_fallback_int_utf8($charval);
		}
		return $newcharstring;
	}

// UTF-16LE => UTF-8
	public static function iconv_fallback_utf16le_utf8($string) {
		if (substr($string, 0, 2) == "\xFF\xFE") {
			// strip BOM
			$string = substr($string, 2);
		}
		$newcharstring = '';
		for ($i = 0; $i < strlen($string); $i += 2) {
			$charval = self::LittleEndian2Int(substr($string, $i, 2));
			$newcharstring .= self::iconv_fallback_int_utf8($charval);
		}
		return $newcharstring;
	}

// UTF-16BE => ISO-8859-1
	public static function iconv_fallback_utf16be_iso88591($string) {
		if (substr($string, 0, 2) == "\xFE\xFF") {
			// strip BOM
			$string = substr($string, 2);
		}
		$newcharstring = '';
		for ($i = 0; $i < strlen($string); $i += 2) {
			$charval = self::BigEndian2Int(substr($string, $i, 2));
			$newcharstring .= (($charval < 256) ? chr($charval) : '?');
		}
		return $newcharstring;
	}

// UTF-16LE => ISO-8859-1
	public static function iconv_fallback_utf16le_iso88591($string) {
		if (substr($string, 0, 2) == "\xFF\xFE") {
			// strip BOM
			$string = substr($string, 2);
		}
		$newcharstring = '';
		for ($i = 0; $i < strlen($string); $i += 2) {
			$charval = self::LittleEndian2Int(substr($string, $i, 2));
			$newcharstring .= (($charval < 256) ? chr($charval) : '?');
		}
		return $newcharstring;
	}

// UTF-16 (BOM) => ISO-8859-1
	public static function iconv_fallback_utf16_iso88591($string) {
		$bom = substr($string, 0, 2);
		if ($bom == "\xFE\xFF") {
			return self::iconv_fallback_utf16be_iso88591(substr($string, 2));
		} elseif ($bom == "\xFF\xFE") {
			return self::iconv_fallback_utf16le_iso88591(substr($string, 2));
		}
		return $string;
	}

// UTF-16 (BOM) => UTF-8
	public static function iconv_fallback_utf16_utf8($string) {
		$bom = substr($string, 0, 2);
		if ($bom == "\xFE\xFF") {
			return self::iconv_fallback_utf16be_utf8(substr($string, 2));
		} elseif ($bom == "\xFF\xFE") {
			return self::iconv_fallback_utf16le_utf8(substr($string, 2));
		}
		return $string;
	}

public static function iconv_fallback($in_charset, $out_charset, $string) {

if ($in_charset == $out_charset) {
			return $string;
		}

// mb_convert_encoding() availble
		if (function_exists('mb_convert_encoding')) {
			if ($converted_string = @mb_convert_encoding($string, $out_charset, $in_charset)) {
				switch ($out_charset) {
					case 'ISO-8859-1':
						$converted_string = rtrim($converted_string, "\x00");
						break;
				}
				return $converted_string;
			}
			return $string;
		}
		// iconv() availble
		else if (function_exists('iconv')) {
			if ($converted_string = @iconv($in_charset, $out_charset.'//TRANSLIT', $string)) {
				switch ($out_charset) {
					case 'ISO-8859-1':
						$converted_string = rtrim($converted_string, "\x00");
						break;
				}
				return $converted_string;
			}

// iconv() may sometimes fail with "illegal character in input string" error message
			// and return an empty string, but returning the unconverted string is more useful
			return $string;
		}

// neither mb_convert_encoding or iconv() is available
		static $ConversionFunctionList = array();
		if (empty($ConversionFunctionList)) {
			$ConversionFunctionList['ISO-8859-1']['UTF-8']    = 'iconv_fallback_iso88591_utf8';
			$ConversionFunctionList['ISO-8859-1']['UTF-16']   = 'iconv_fallback_iso88591_utf16';
			$ConversionFunctionList['ISO-8859-1']['UTF-16BE'] = 'iconv_fallback_iso88591_utf16be';
			$ConversionFunctionList['ISO-8859-1']['UTF-16LE'] = 'iconv_fallback_iso88591_utf16le';
			$ConversionFunctionList['UTF-8']['ISO-8859-1']    = 'iconv_fallback_utf8_iso88591';
			$ConversionFunctionList['UTF-8']['UTF-16']        = 'iconv_fallback_utf8_utf16';
			$ConversionFunctionList['UTF-8']['UTF-16BE']      = 'iconv_fallback_utf8_utf16be';
			$ConversionFunctionList['UTF-8']['UTF-16LE']      = 'iconv_fallback_utf8_utf16le';
			$ConversionFunctionList['UTF-16']['ISO-8859-1']   = 'iconv_fallback_utf16_iso88591';
			$ConversionFunctionList['UTF-16']['UTF-8']        = 'iconv_fallback_utf16_utf8';
			$ConversionFunctionList['UTF-16LE']['ISO-8859-1'] = 'iconv_fallback_utf16le_iso88591';
			$ConversionFunctionList['UTF-16LE']['UTF-8']      = 'iconv_fallback_utf16le_utf8';
			$ConversionFunctionList['UTF-16BE']['ISO-8859-1'] = 'iconv_fallback_utf16be_iso88591';
			$ConversionFunctionList['UTF-16BE']['UTF-8']      = 'iconv_fallback_utf16be_utf8';
		}
		if (isset($ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)])) {
			$ConversionFunction = $ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)];
			return self::$ConversionFunction($string);
		}
		throw new Exception('PHP does not has mb_convert_encoding() or iconv() support - cannot convert from '.$in_charset.' to '.$out_charset);
	}

public static function recursiveMultiByteCharString2HTML($data, $charset='ISO-8859-1') {
		if (is_string($data)) {
			return self::MultiByteCharString2HTML($data, $charset);
		} elseif (is_array($data)) {
			$return_data = array();
			foreach ($data as $key => $value) {
				$return_data[$key] = self::recursiveMultiByteCharString2HTML($value, $charset);
			}
			return $return_data;
		}
		// integer, float, objects, resources, etc
		return $data;
	}

public static function MultiByteCharString2HTML($string, $charset='ISO-8859-1') {
		$string = (string) $string; // in case trying to pass a numeric (float, int) string, would otherwise return an empty string
		$HTMLstring = '';

switch (strtolower($charset)) {
			case '1251':
			case '1252':
			case '866':
			case '932':
			case '936':
			case '950':
			case 'big5':
			case 'big5-hkscs':
			case 'cp1251':
			case 'cp1252':
			case 'cp866':
			case 'euc-jp':
			case 'eucjp':
			case 'gb2312':
			case 'ibm866':
			case 'iso-8859-1':
			case 'iso-8859-15':
			case 'iso8859-1':
			case 'iso8859-15':
			case 'koi8-r':
			case 'koi8-ru':
			case 'koi8r':
			case 'shift_jis':
			case 'sjis':
			case 'win-1251':
			case 'windows-1251':
			case 'windows-1252':
				$HTMLstring = htmlentities($string, ENT_COMPAT, $charset);
				break;

case 'utf-8':
				$strlen = strlen($string);
				for ($i = 0; $i < $strlen; $i++) {
					$char_ord_val = ord($string[$i]);
					$charval = 0;
					if ($char_ord_val < 0x80) {
						$charval = $char_ord_val;
					} elseif ((($char_ord_val & 0xF0) >> 4) == 0x0F  &&  $i+3 < $strlen) {
						$charval  = (($char_ord_val & 0x07) << 18);
						$charval += ((ord($string[++$i]) & 0x3F) << 12);
						$charval += ((ord($string[++$i]) & 0x3F) << 6);
						$charval +=  (ord($string[++$i]) & 0x3F);
					} elseif ((($char_ord_val & 0xE0) >> 5) == 0x07  &&  $i+2 < $strlen) {
						$charval  = (($char_ord_val & 0x0F) << 12);
						$charval += ((ord($string[++$i]) & 0x3F) << 6);
						$charval +=  (ord($string[++$i]) & 0x3F);
					} elseif ((($char_ord_val & 0xC0) >> 6) == 0x03  &&  $i+1 < $strlen) {
						$charval  = (($char_ord_val & 0x1F) << 6);
						$charval += (ord($string[++$i]) & 0x3F);
					}
					if (($charval >= 32) && ($charval <= 127)) {
						$HTMLstring .= htmlentities(chr($charval));
					} else {
						$HTMLstring .= '&#'.$charval.';';
					}
				}
				break;

case 'utf-16le':
				for ($i = 0; $i < strlen($string); $i += 2) {
					$charval = self::LittleEndian2Int(substr($string, $i, 2));
					if (($charval >= 32) && ($charval <= 127)) {
						$HTMLstring .= chr($charval);
					} else {
						$HTMLstring .= '&#'.$charval.';';
					}
				}
				break;

case 'utf-16be':
				for ($i = 0; $i < strlen($string); $i += 2) {
					$charval = self::BigEndian2Int(substr($string, $i, 2));
					if (($charval >= 32) && ($charval <= 127)) {
						$HTMLstring .= chr($charval);
					} else {
						$HTMLstring .= '&#'.$charval.';';
					}
				}
				break;

default:
				$HTMLstring = 'ERROR: Character set "'.$charset.'" not supported in MultiByteCharString2HTML()';
				break;
		}
		return $HTMLstring;
	}

public static function RGADnameLookup($namecode) {
		static $RGADname = array();
		if (empty($RGADname)) {
			$RGADname[0] = 'not set';
			$RGADname[1] = 'Track Gain Adjustment';
			$RGADname[2] = 'Album Gain Adjustment';
		}

return (isset($RGADname[$namecode]) ? $RGADname[$namecode] : '');
	}

public static function RGADoriginatorLookup($originatorcode) {
		static $RGADoriginator = array();
		if (empty($RGADoriginator)) {
			$RGADoriginator[0] = 'unspecified';
			$RGADoriginator[1] = 'pre-set by artist/producer/mastering engineer';
			$RGADoriginator[2] = 'set by user';
			$RGADoriginator[3] = 'determined automatically';
		}

return (isset($RGADoriginator[$originatorcode]) ? $RGADoriginator[$originatorcode] : '');
	}

public static function RGADadjustmentLookup($rawadjustment, $signbit) {
		$adjustment = $rawadjustment / 10;
		if ($signbit == 1) {
			$adjustment *= -1;
		}
		return (float) $adjustment;
	}

public static function RGADgainString($namecode, $originatorcode, $replaygain) {
		if ($replaygain < 0) {
			$signbit = '1';
		} else {
			$signbit = '0';
		}
		$storedreplaygain = intval(round($replaygain * 10));
		$gainstring  = str_pad(decbin($namecode), 3, '0', STR_PAD_LEFT);
		$gainstring .= str_pad(decbin($originatorcode), 3, '0', STR_PAD_LEFT);
		$gainstring .= $signbit;
		$gainstring .= str_pad(decbin($storedreplaygain), 9, '0', STR_PAD_LEFT);

return $gainstring;
	}

public static function RGADamplitude2dB($amplitude) {
		return 20 * log10($amplitude);
	}

public static function GetDataImageSize($imgData, &$imageinfo=array()) {
		static $tempdir = '';
		if (empty($tempdir)) {
			if (function_exists('sys_get_temp_dir')) {
				$tempdir = sys_get_temp_dir(); // https://github.com/JamesHeinrich/getID3/issues/52
			}

// yes this is ugly, feel free to suggest a better way
			if (include_once(dirname(__FILE__).'/getid3.php')) {
				if ($getid3_temp = new getID3()) {
					if ($getid3_temp_tempdir = $getid3_temp->tempdir) {
						$tempdir = $getid3_temp_tempdir;
					}
					unset($getid3_temp, $getid3_temp_tempdir);
				}
			}
		}
		$GetDataImageSize = false;
		if ($tempfilename = tempnam($tempdir, 'gI3')) {
			if (is_writable($tempfilename) && is_file($tempfilename) && ($tmp = fopen($tempfilename, 'wb'))) {
				fwrite($tmp, $imgData);
				fclose($tmp);
				$GetDataImageSize = @getimagesize($tempfilename, $imageinfo);
				if (($GetDataImageSize === false) || !isset($GetDataImageSize[0]) || !isset($GetDataImageSize[1])) {
					return false;
				}
				$GetDataImageSize['height'] = $GetDataImageSize[0];
				$GetDataImageSize['width']  = $GetDataImageSize[1];
			}
			unlink($tempfilename);
		}
		return $GetDataImageSize;
	}

public static function ImageExtFromMime($mime_type) {
		// temporary way, works OK for now, but should be reworked in the future
		return str_replace(array('image/', 'x-', 'jpeg'), array('', '', 'jpg'), $mime_type);
	}

public static function ImageTypesLookup($imagetypeid) {
		static $ImageTypesLookup = array();
		if (empty($ImageTypesLookup)) {
			$ImageTypesLookup[1]  = 'gif';
			$ImageTypesLookup[2]  = 'jpeg';
			$ImageTypesLookup[3]  = 'png';
			$ImageTypesLookup[4]  = 'swf';
			$ImageTypesLookup[5]  = 'psd';
			$ImageTypesLookup[6]  = 'bmp';
			$ImageTypesLookup[7]  = 'tiff (little-endian)';
			$ImageTypesLookup[8]  = 'tiff (big-endian)';
			$ImageTypesLookup[9]  = 'jpc';
			$ImageTypesLookup[10] = 'jp2';
			$ImageTypesLookup[11] = 'jpx';
			$ImageTypesLookup[12] = 'jb2';
			$ImageTypesLookup[13] = 'swc';
			$ImageTypesLookup[14] = 'iff';
		}
		return (isset($ImageTypesLookup[$imagetypeid]) ? $ImageTypesLookup[$imagetypeid] : '');
	}

public static function CopyTagsToComments(&$ThisFileInfo) {

// Copy all entries from ['tags'] into common ['comments']
		if (!empty($ThisFileInfo['tags'])) {
			foreach ($ThisFileInfo['tags'] as $tagtype => $tagarray) {
				foreach ($tagarray as $tagname => $tagdata) {
					foreach ($tagdata as $key => $value) {
						if (!empty($value)) {
							if (empty($ThisFileInfo['comments'][$tagname])) {

// fall through and append value

} elseif ($tagtype == 'id3v1') {

$newvaluelength = strlen(trim($value));
								foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
									$oldvaluelength = strlen(trim($existingvalue));
									if (($newvaluelength <= $oldvaluelength) && (substr($existingvalue, 0, $newvaluelength) == trim($value))) {
										// new value is identical but shorter-than (or equal-length to) one already in comments - skip
										break 2;
									}
								}

} elseif (!is_array($value)) {

$newvaluelength = strlen(trim($value));
								foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
									$oldvaluelength = strlen(trim($existingvalue));
									if ((strlen($existingvalue) > 10) && ($newvaluelength > $oldvaluelength) && (substr(trim($value), 0, strlen($existingvalue)) == $existingvalue)) {
										$ThisFileInfo['comments'][$tagname][$existingkey] = trim($value);
										//break 2;
										break;
									}
								}

}
							if (is_array($value) || empty($ThisFileInfo['comments'][$tagname]) || !in_array(trim($value), $ThisFileInfo['comments'][$tagname])) {
								$value = (is_string($value) ? trim($value) : $value);
								if (!is_int($key) && !ctype_digit($key)) {
									$ThisFileInfo['comments'][$tagname][$key] = $value;
								} else {
									if (isset($ThisFileInfo['comments'][$tagname])) {
										$ThisFileInfo['comments'][$tagname] = array($value);
									} else {
										$ThisFileInfo['comments'][$tagname][] = $value;
									}
								}
							}
						}
					}
				}
			}

// attempt to standardize spelling of returned keys
			$StandardizeFieldNames = array(
				'tracknumber' => 'track_number',
				'track'       => 'track_number',
			);
			foreach ($StandardizeFieldNames as $badkey => $goodkey) {
				if (array_key_exists($badkey, $ThisFileInfo['comments']) && !array_key_exists($goodkey, $ThisFileInfo['comments'])) {
					$ThisFileInfo['comments'][$goodkey] = $ThisFileInfo['comments'][$badkey];
					unset($ThisFileInfo['comments'][$badkey]);
				}
			}

// Copy to ['comments_html']
			if (!empty($ThisFileInfo['comments'])) {
				foreach ($ThisFileInfo['comments'] as $field => $values) {
					if ($field == 'picture') {
						// pictures can take up a lot of space, and we don't need multiple copies of them
						// let there be a single copy in [comments][picture], and not elsewhere
						continue;
					}
					foreach ($values as $index => $value) {
						if (is_array($value)) {
							$ThisFileInfo['comments_html'][$field][$index] = $value;
						} else {
							$ThisFileInfo['comments_html'][$field][$index] = str_replace('&#0;', '', self::MultiByteCharString2HTML($value, $ThisFileInfo['encoding']));
						}
					}
				}
			}

}
		return true;
	}

public static function EmbeddedLookup($key, $begin, $end, $file, $name) {

// Cached
		static $cache;
		if (isset($cache[$file][$name])) {
			return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : '');
		}

// Init
		$keylength  = strlen($key);
		$line_count = $end - $begin - 7;

// Open php file
		$fp = fopen($file, 'r');

// Discard $begin lines
		for ($i = 0; $i < ($begin + 3); $i++) {
			fgets($fp, 1024);
		}

// Loop thru line
		while (0 < $line_count--) {

// Read line
			$line = ltrim(fgets($fp, 1024), "\t ");

// METHOD A: only cache the matching key - less memory but slower on next lookup of not-previously-looked-up key
			//$keycheck = substr($line, 0, $keylength);
			//if ($key == $keycheck)  {
			//	$cache[$file][$name][$keycheck] = substr($line, $keylength + 1);
			//	break;
			//}

// METHOD B: cache all keys in this lookup - more memory but faster on next lookup of not-previously-looked-up key
			//$cache[$file][$name][substr($line, 0, $keylength)] = trim(substr($line, $keylength + 1));
			$explodedLine = explode("\t", $line, 2);
			$ThisKey   = (isset($explodedLine[0]) ? $explodedLine[0] : '');
			$ThisValue = (isset($explodedLine[1]) ? $explodedLine[1] : '');
			$cache[$file][$name][$ThisKey] = trim($ThisValue);
		}

// Close and return
		fclose($fp);
		return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : '');
	}

public static function IncludeDependency($filename, $sourcefile, $DieOnFailure=false) {
		global $GETID3_ERRORARRAY;

if (file_exists($filename)) {
			if (include_once($filename)) {
				return true;
			} else {
				$diemessage = basename($sourcefile).' depends on '.$filename.', which has errors';
			}
		} else {
			$diemessage = basename($sourcefile).' depends on '.$filename.', which is missing';
		}
		if ($DieOnFailure) {
			throw new Exception($diemessage);
		} else {
			$GETID3_ERRORARRAY[] = $diemessage;
		}
		return false;
	}

public static function trimNullByte($string) {
		return trim($string, "\x00");
	}

public static function getFileSizeSyscall($path) {
		$filesize = false;

if (GETID3_OS_ISWINDOWS) {
			if (class_exists('COM')) { // From PHP 5.3.15 and 5.4.5, COM and DOTNET is no longer built into the php core.you have to add COM support in php.ini:
				$filesystem = new COM('Scripting.FileSystemObject');
				$file = $filesystem->GetFile($path);
				$filesize = $file->Size();
				unset($filesystem, $file);
			} else {
				$commandline = 'for %I in ('.escapeshellarg($path).') do @echo %~zI';
			}
		} else {
			$commandline = 'ls -l '.escapeshellarg($path).' | awk \'{print $5}\'';
		}
		if (isset($commandline)) {
			$output = trim(`$commandline`);
			if (ctype_digit($output)) {
				$filesize = (float) $output;
			}
		}
		return $filesize;
	}

/**
	* Workaround for Bug #37268 (https://bugs.php.net/bug.php?id=37268)
	* @param string $path A path.
	* @param string $suffix If the name component ends in suffix this will also be cut off.
	* @return string
	*/
	public static function mb_basename($path, $suffix = null) {
		$splited = preg_split('#/#', rtrim($path, '/ '));
		return substr(basename('X'.$splited[count($splited) - 1], $suffix), 1);
	}

}

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