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Edit File : bookmark.php \| Size : 13.55 KB
<?php /** * Link/Bookmark API * * @package WordPress * @subpackage Bookmark / /* * Retrieve Bookmark data * * @since 2.1.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param int\|stdClass $bookmark * @param string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which correspond to * an stdClass object, an associative array, or a numeric array, respectively. Default OBJECT. * @param string $filter Optional, default is 'raw'. * @return array\|object\|null Type returned depends on $output value. / function get_bookmark( $bookmark, $output = OBJECT, $filter = 'raw' ) { global $wpdb; if ( empty( $bookmark ) ) { if ( isset( $GLOBALS['link'] ) ) { $_bookmark = & $GLOBALS['link']; } else { $_bookmark = null; } } elseif ( is_object( $bookmark ) ) { wp_cache_add( $bookmark->link_id, $bookmark, 'bookmark' ); $_bookmark = $bookmark; } else { if ( isset( $GLOBALS['link'] ) && ( $GLOBALS['link']->link_id == $bookmark ) ) { $_bookmark = & $GLOBALS['link']; } elseif ( ! $_bookmark = wp_cache_get( $bookmark, 'bookmark' ) ) { $_bookmark = $wpdb->get_row( $wpdb->prepare( "SELECT FROM $wpdb->links WHERE link_id = %d LIMIT 1", $bookmark ) ); if ( $_bookmark ) { $_bookmark->link_category = array_unique( wp_get_object_terms( $_bookmark->link_id, 'link_category', array( 'fields' => 'ids' ) ) ); wp_cache_add( $_bookmark->link_id, $_bookmark, 'bookmark' ); } } } if ( ! $_bookmark ) { return $_bookmark; } $_bookmark = sanitize_bookmark( $_bookmark, $filter ); if ( $output == OBJECT ) { return $_bookmark; } elseif ( $output == ARRAY_A ) { return get_object_vars( $_bookmark ); } elseif ( $output == ARRAY_N ) { return array_values( get_object_vars( $_bookmark ) ); } else { return $_bookmark; } } /** * Retrieve single bookmark data item or field. * * @since 2.3.0 * * @param string $field The name of the data field to return * @param int $bookmark The bookmark ID to get field * @param string $context Optional. The context of how the field will be used. * @return string\|WP_Error / function get_bookmark_field( $field, $bookmark, $context = 'display' ) { $bookmark = (int) $bookmark; $bookmark = get_bookmark( $bookmark ); if ( is_wp_error( $bookmark ) ) { return $bookmark; } if ( ! is_object( $bookmark ) ) { return ''; } if ( ! isset( $bookmark->$field ) ) { return ''; } return sanitize_bookmark_field( $field, $bookmark->$field, $bookmark->link_id, $context ); } /* * Retrieves the list of bookmarks * * Attempts to retrieve from the cache first based on MD5 hash of arguments. If * that fails, then the query will be built from the arguments and executed. The * results will be stored to the cache. * * @since 2.1.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param string\|array $args { * Optional. String or array of arguments to retrieve bookmarks. * * @type string $orderby How to order the links by. Accepts post fields. Default 'name'. * @type string $order Whether to order bookmarks in ascending or descending order. * Accepts 'ASC' (ascending) or 'DESC' (descending). Default 'ASC'. * @type int $limit Amount of bookmarks to display. Accepts 1+ or -1 for all. * Default -1. * @type string $category Comma-separated list of category ids to include links from. * Default empty. * @type string $category_name Category to retrieve links for by name. Default empty. * @type int\|bool $hide_invisible Whether to show or hide links marked as 'invisible'. Accepts * 1\|true or 0\|false. Default 1\|true. * @type int\|bool $show_updated Whether to display the time the bookmark was last updated. * Accepts 1\|true or 0\|false. Default 0\|false. * @type string $include Comma-separated list of bookmark IDs to include. Default empty. * @type string $exclude Comma-separated list of bookmark IDs to exclude. Default empty. * } * @return array List of bookmark row objects. / function get_bookmarks( $args = '' ) { global $wpdb; $defaults = array( 'orderby' => 'name', 'order' => 'ASC', 'limit' => -1, 'category' => '', 'category_name' => '', 'hide_invisible' => 1, 'show_updated' => 0, 'include' => '', 'exclude' => '', 'search' => '', ); $r = wp_parse_args( $args, $defaults ); $key = md5( serialize( $r ) ); $cache = false; if ( 'rand' !== $r['orderby'] && $cache = wp_cache_get( 'get_bookmarks', 'bookmark' ) ) { if ( is_array( $cache ) && isset( $cache[ $key ] ) ) { $bookmarks = $cache[ $key ]; /* * Filters the returned list of bookmarks. * * The first time the hook is evaluated in this file, it returns the cached * bookmarks list. The second evaluation returns a cached bookmarks list if the * link category is passed but does not exist. The third evaluation returns * the full cached results. * * @since 2.1.0 * * @see get_bookmarks() * * @param array $bookmarks List of the cached bookmarks. * @param array $r An array of bookmark query arguments. / return apply_filters( 'get_bookmarks', $bookmarks, $r ); } } if ( ! is_array( $cache ) ) { $cache = array(); } $inclusions = ''; if ( ! empty( $r['include'] ) ) { $r['exclude'] = ''; //ignore exclude, category, and category_name params if using include $r['category'] = ''; $r['category_name'] = ''; $inclinks = wp_parse_id_list( $r['include'] ); if ( count( $inclinks ) ) { foreach ( $inclinks as $inclink ) { if ( empty( $inclusions ) ) { $inclusions = ' AND ( link_id = ' . $inclink . ' '; } else { $inclusions .= ' OR link_id = ' . $inclink . ' '; } } } } if ( ! empty( $inclusions ) ) { $inclusions .= ')'; } $exclusions = ''; if ( ! empty( $r['exclude'] ) ) { $exlinks = wp_parse_id_list( $r['exclude'] ); if ( count( $exlinks ) ) { foreach ( $exlinks as $exlink ) { if ( empty( $exclusions ) ) { $exclusions = ' AND ( link_id <> ' . $exlink . ' '; } else { $exclusions .= ' AND link_id <> ' . $exlink . ' '; } } } } if ( ! empty( $exclusions ) ) { $exclusions .= ')'; } if ( ! empty( $r['category_name'] ) ) { if ( $r['category'] = get_term_by( 'name', $r['category_name'], 'link_category' ) ) { $r['category'] = $r['category']->term_id; } else { $cache[ $key ] = array(); wp_cache_set( 'get_bookmarks', $cache, 'bookmark' ); /* This filter is documented in site-inc/bookmark.php / return apply_filters( 'get_bookmarks', array(), $r ); } } $search = ''; if ( ! empty( $r['search'] ) ) { $like = '%' . $wpdb->esc_like( $r['search'] ) . '%'; $search = $wpdb->prepare( ' AND ( (link_url LIKE %s) OR (link_name LIKE %s) OR (link_description LIKE %s) ) ', $like, $like, $like ); } $category_query = ''; $join = ''; if ( ! empty( $r['category'] ) ) { $incategories = wp_parse_id_list( $r['category'] ); if ( count( $incategories ) ) { foreach ( $incategories as $incat ) { if ( empty( $category_query ) ) { $category_query = ' AND ( tt.term_id = ' . $incat . ' '; } else { $category_query .= ' OR tt.term_id = ' . $incat . ' '; } } } } if ( ! empty( $category_query ) ) { $category_query .= ") AND taxonomy = 'link_category'"; $join = " INNER JOIN $wpdb->term_relationships AS tr ON ($wpdb->links.link_id = tr.object_id) INNER JOIN $wpdb->term_taxonomy as tt ON tt.term_taxonomy_id = tr.term_taxonomy_id"; } if ( $r['show_updated'] ) { $recently_updated_test = ', IF (DATE_ADD(link_updated, INTERVAL 120 MINUTE) >= NOW(), 1,0) as recently_updated '; } else { $recently_updated_test = ''; } $get_updated = ( $r['show_updated'] ) ? ', UNIX_TIMESTAMP(link_updated) AS link_updated_f ' : ''; $orderby = strtolower( $r['orderby'] ); $length = ''; switch ( $orderby ) { case 'length': $length = ', CHAR_LENGTH(link_name) AS length'; break; case 'rand': $orderby = 'rand()'; break; case 'link_id': $orderby = "$wpdb->links.link_id"; break; default: $orderparams = array(); $keys = array( 'link_id', 'link_name', 'link_url', 'link_visible', 'link_rating', 'link_owner', 'link_updated', 'link_notes', 'link_description' ); foreach ( explode( ',', $orderby ) as $ordparam ) { $ordparam = trim( $ordparam ); if ( in_array( 'link_' . $ordparam, $keys ) ) { $orderparams[] = 'link_' . $ordparam; } elseif ( in_array( $ordparam, $keys ) ) { $orderparams[] = $ordparam; } } $orderby = implode( ',', $orderparams ); } if ( empty( $orderby ) ) { $orderby = 'link_name'; } $order = strtoupper( $r['order'] ); if ( '' !== $order && ! in_array( $order, array( 'ASC', 'DESC' ) ) ) { $order = 'ASC'; } $visible = ''; if ( $r['hide_invisible'] ) { $visible = "AND link_visible = 'Y'"; } $query = "SELECT $length $recently_updated_test $get_updated FROM $wpdb->links $join WHERE 1=1 $visible $category_query"; $query .= " $exclusions $inclusions $search"; $query .= " ORDER BY $orderby $order"; if ( $r['limit'] != -1 ) { $query .= ' LIMIT ' . $r['limit']; } $results = $wpdb->get_results( $query ); if ( 'rand()' !== $orderby ) { $cache[ $key ] = $results; wp_cache_set( 'get_bookmarks', $cache, 'bookmark' ); } /** This filter is documented in site-inc/bookmark.php / return apply_filters( 'get_bookmarks', $results, $r ); } /* * Sanitizes all bookmark fields * * @since 2.3.0 * * @param stdClass\|array $bookmark Bookmark row * @param string $context Optional, default is 'display'. How to filter the * fields * @return stdClass\|array Same type as $bookmark but with fields sanitized. / function sanitize_bookmark( $bookmark, $context = 'display' ) { $fields = array( 'link_id', 'link_url', 'link_name', 'link_image', 'link_target', 'link_category', 'link_description', 'link_visible', 'link_owner', 'link_rating', 'link_updated', 'link_rel', 'link_notes', 'link_rss', ); if ( is_object( $bookmark ) ) { $do_object = true; $link_id = $bookmark->link_id; } else { $do_object = false; $link_id = $bookmark['link_id']; } foreach ( $fields as $field ) { if ( $do_object ) { if ( isset( $bookmark->$field ) ) { $bookmark->$field = sanitize_bookmark_field( $field, $bookmark->$field, $link_id, $context ); } } else { if ( isset( $bookmark[ $field ] ) ) { $bookmark[ $field ] = sanitize_bookmark_field( $field, $bookmark[ $field ], $link_id, $context ); } } } return $bookmark; } /* * Sanitizes a bookmark field. * * Sanitizes the bookmark fields based on what the field name is. If the field * has a strict value set, then it will be tested for that, else a more generic * filtering is applied. After the more strict filter is applied, if the `$context` * is 'raw' then the value is immediately return. * * Hooks exist for the more generic cases. With the 'edit' context, the {@see 'edit_$field'} * filter will be called and passed the `$value` and `$bookmark_id` respectively. * * With the 'db' context, the {@see 'pre_$field'} filter is called and passed the value. * The 'display' context is the final context and has the `$field` has the filter name * and is passed the `$value`, `$bookmark_id`, and `$context`, respectively. * * @since 2.3.0 * * @param string $field The bookmark field. * @param mixed $value The bookmark field value. * @param int $bookmark_id Bookmark ID. * @param string $context How to filter the field value. Accepts 'raw', 'edit', 'attribute', * 'js', 'db', or 'display' * @return mixed The filtered value. / function sanitize_bookmark_field( $field, $value, $bookmark_id, $context ) { switch ( $field ) { case 'link_id': // ints case 'link_rating': $value = (int) $value; break; case 'link_category': // array( ints ) $value = array_map( 'absint', (array) $value ); // We return here so that the categories aren't filtered. // The 'link_category' filter is for the name of a link category, not an array of a link's link categories return $value; case 'link_visible': // bool stored as Y\|N $value = preg_replace( '/[^YNyn]/', '', $value ); break; case 'link_target': // "enum" $targets = array( '_top', '_blank' ); if ( ! in_array( $value, $targets ) ) { $value = ''; } break; } if ( 'raw' == $context ) { return $value; } if ( 'edit' == $context ) { /* This filter is documented in site-inc/post.php / $value = apply_filters( "edit_{$field}", $value, $bookmark_id ); if ( 'link_notes' == $field ) { $value = esc_html( $value ); // textarea_escaped } else { $value = esc_attr( $value ); } } elseif ( 'db' == $context ) { /* This filter is documented in site-inc/post.php / $value = apply_filters( "pre_{$field}", $value ); } else { /* This filter is documented in site-inc/post.php / $value = apply_filters( "{$field}", $value, $bookmark_id, $context ); if ( 'attribute' == $context ) { $value = esc_attr( $value ); } elseif ( 'js' == $context ) { $value = esc_js( $value ); } } return $value; } /* * Deletes the bookmark cache. * * @since 2.7.0 * * @param int $bookmark_id Bookmark ID. */ function clean_bookmark_cache( $bookmark_id ) { wp_cache_delete( $bookmark_id, 'bookmark' ); wp_cache_delete( 'get_bookmarks', 'bookmark' ); clean_object_term_cache( $bookmark_id, 'link' ); } Back

Edit File : bookmark.php | Size : 13.55 KB

<?php
/**
 * Link/Bookmark API
 *
 * @package WordPress
 * @subpackage Bookmark
 */

/**
 * Retrieve Bookmark data
 *
 * @since 2.1.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param int|stdClass $bookmark
 * @param string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which correspond to
 *                       an stdClass object, an associative array, or a numeric array, respectively. Default OBJECT.
 * @param string $filter Optional, default is 'raw'.
 * @return array|object|null Type returned depends on $output value.
 */
function get_bookmark( $bookmark, $output = OBJECT, $filter = 'raw' ) {
	global $wpdb;

if ( empty( $bookmark ) ) {
		if ( isset( $GLOBALS['link'] ) ) {
			$_bookmark = & $GLOBALS['link'];
		} else {
			$_bookmark = null;
		}
	} elseif ( is_object( $bookmark ) ) {
		wp_cache_add( $bookmark->link_id, $bookmark, 'bookmark' );
		$_bookmark = $bookmark;
	} else {
		if ( isset( $GLOBALS['link'] ) && ( $GLOBALS['link']->link_id == $bookmark ) ) {
			$_bookmark = & $GLOBALS['link'];
		} elseif ( ! $_bookmark = wp_cache_get( $bookmark, 'bookmark' ) ) {
			$_bookmark = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->links WHERE link_id = %d LIMIT 1", $bookmark ) );
			if ( $_bookmark ) {
				$_bookmark->link_category = array_unique( wp_get_object_terms( $_bookmark->link_id, 'link_category', array( 'fields' => 'ids' ) ) );
				wp_cache_add( $_bookmark->link_id, $_bookmark, 'bookmark' );
			}
		}
	}

if ( ! $_bookmark ) {
		return $_bookmark;
	}

$_bookmark = sanitize_bookmark( $_bookmark, $filter );

if ( $output == OBJECT ) {
		return $_bookmark;
	} elseif ( $output == ARRAY_A ) {
		return get_object_vars( $_bookmark );
	} elseif ( $output == ARRAY_N ) {
		return array_values( get_object_vars( $_bookmark ) );
	} else {
		return $_bookmark;
	}
}

/**
 * Retrieve single bookmark data item or field.
 *
 * @since 2.3.0
 *
 * @param string $field The name of the data field to return
 * @param int $bookmark The bookmark ID to get field
 * @param string $context Optional. The context of how the field will be used.
 * @return string|WP_Error
 */
function get_bookmark_field( $field, $bookmark, $context = 'display' ) {
	$bookmark = (int) $bookmark;
	$bookmark = get_bookmark( $bookmark );

if ( is_wp_error( $bookmark ) ) {
		return $bookmark;
	}

if ( ! is_object( $bookmark ) ) {
		return '';
	}

if ( ! isset( $bookmark->$field ) ) {
		return '';
	}

return sanitize_bookmark_field( $field, $bookmark->$field, $bookmark->link_id, $context );
}

/**
 * Retrieves the list of bookmarks
 *
 * Attempts to retrieve from the cache first based on MD5 hash of arguments. If
 * that fails, then the query will be built from the arguments and executed. The
 * results will be stored to the cache.
 *
 * @since 2.1.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string|array $args {
 *     Optional. String or array of arguments to retrieve bookmarks.
 *
 *     @type string   $orderby        How to order the links by. Accepts post fields. Default 'name'.
 *     @type string   $order          Whether to order bookmarks in ascending or descending order.
 *                                    Accepts 'ASC' (ascending) or 'DESC' (descending). Default 'ASC'.
 *     @type int      $limit          Amount of bookmarks to display. Accepts 1+ or -1 for all.
 *                                    Default -1.
 *     @type string   $category       Comma-separated list of category ids to include links from.
 *                                    Default empty.
 *     @type string   $category_name  Category to retrieve links for by name. Default empty.
 *     @type int|bool $hide_invisible Whether to show or hide links marked as 'invisible'. Accepts
 *                                    1|true or 0|false. Default 1|true.
 *     @type int|bool $show_updated   Whether to display the time the bookmark was last updated.
 *                                    Accepts 1|true or 0|false. Default 0|false.
 *     @type string   $include        Comma-separated list of bookmark IDs to include. Default empty.
 *     @type string   $exclude        Comma-separated list of bookmark IDs to exclude. Default empty.
 * }
 * @return array List of bookmark row objects.
 */
function get_bookmarks( $args = '' ) {
	global $wpdb;

$defaults = array(
		'orderby'        => 'name',
		'order'          => 'ASC',
		'limit'          => -1,
		'category'       => '',
		'category_name'  => '',
		'hide_invisible' => 1,
		'show_updated'   => 0,
		'include'        => '',
		'exclude'        => '',
		'search'         => '',
	);

$r = wp_parse_args( $args, $defaults );

$key   = md5( serialize( $r ) );
	$cache = false;
	if ( 'rand' !== $r['orderby'] && $cache = wp_cache_get( 'get_bookmarks', 'bookmark' ) ) {
		if ( is_array( $cache ) && isset( $cache[ $key ] ) ) {
			$bookmarks = $cache[ $key ];
			/**
			 * Filters the returned list of bookmarks.
			 *
			 * The first time the hook is evaluated in this file, it returns the cached
			 * bookmarks list. The second evaluation returns a cached bookmarks list if the
			 * link category is passed but does not exist. The third evaluation returns
			 * the full cached results.
			 *
			 * @since 2.1.0
			 *
			 * @see get_bookmarks()
			 *
			 * @param array $bookmarks List of the cached bookmarks.
			 * @param array $r         An array of bookmark query arguments.
			 */
			return apply_filters( 'get_bookmarks', $bookmarks, $r );
		}
	}

if ( ! is_array( $cache ) ) {
		$cache = array();
	}

$inclusions = '';
	if ( ! empty( $r['include'] ) ) {
		$r['exclude']       = '';  //ignore exclude, category, and category_name params if using include
		$r['category']      = '';
		$r['category_name'] = '';
		$inclinks           = wp_parse_id_list( $r['include'] );
		if ( count( $inclinks ) ) {
			foreach ( $inclinks as $inclink ) {
				if ( empty( $inclusions ) ) {
					$inclusions = ' AND ( link_id = ' . $inclink . ' ';
				} else {
					$inclusions .= ' OR link_id = ' . $inclink . ' ';
				}
			}
		}
	}
	if ( ! empty( $inclusions ) ) {
		$inclusions .= ')';
	}

$exclusions = '';
	if ( ! empty( $r['exclude'] ) ) {
		$exlinks = wp_parse_id_list( $r['exclude'] );
		if ( count( $exlinks ) ) {
			foreach ( $exlinks as $exlink ) {
				if ( empty( $exclusions ) ) {
					$exclusions = ' AND ( link_id <> ' . $exlink . ' ';
				} else {
					$exclusions .= ' AND link_id <> ' . $exlink . ' ';
				}
			}
		}
	}
	if ( ! empty( $exclusions ) ) {
		$exclusions .= ')';
	}

if ( ! empty( $r['category_name'] ) ) {
		if ( $r['category'] = get_term_by( 'name', $r['category_name'], 'link_category' ) ) {
			$r['category'] = $r['category']->term_id;
		} else {
			$cache[ $key ] = array();
			wp_cache_set( 'get_bookmarks', $cache, 'bookmark' );
			/** This filter is documented in site-inc/bookmark.php */
			return apply_filters( 'get_bookmarks', array(), $r );
		}
	}

$search = '';
	if ( ! empty( $r['search'] ) ) {
		$like   = '%' . $wpdb->esc_like( $r['search'] ) . '%';
		$search = $wpdb->prepare( ' AND ( (link_url LIKE %s) OR (link_name LIKE %s) OR (link_description LIKE %s) ) ', $like, $like, $like );
	}

$category_query = '';
	$join           = '';
	if ( ! empty( $r['category'] ) ) {
		$incategories = wp_parse_id_list( $r['category'] );
		if ( count( $incategories ) ) {
			foreach ( $incategories as $incat ) {
				if ( empty( $category_query ) ) {
					$category_query = ' AND ( tt.term_id = ' . $incat . ' ';
				} else {
					$category_query .= ' OR tt.term_id = ' . $incat . ' ';
				}
			}
		}
	}
	if ( ! empty( $category_query ) ) {
		$category_query .= ") AND taxonomy = 'link_category'";
		$join            = " INNER JOIN $wpdb->term_relationships AS tr ON ($wpdb->links.link_id = tr.object_id) INNER JOIN $wpdb->term_taxonomy as tt ON tt.term_taxonomy_id = tr.term_taxonomy_id";
	}

if ( $r['show_updated'] ) {
		$recently_updated_test = ', IF (DATE_ADD(link_updated, INTERVAL 120 MINUTE) >= NOW(), 1,0) as recently_updated ';
	} else {
		$recently_updated_test = '';
	}

$get_updated = ( $r['show_updated'] ) ? ', UNIX_TIMESTAMP(link_updated) AS link_updated_f ' : '';

$orderby = strtolower( $r['orderby'] );
	$length  = '';
	switch ( $orderby ) {
		case 'length':
			$length = ', CHAR_LENGTH(link_name) AS length';
			break;
		case 'rand':
			$orderby = 'rand()';
			break;
		case 'link_id':
			$orderby = "$wpdb->links.link_id";
			break;
		default:
			$orderparams = array();
			$keys        = array( 'link_id', 'link_name', 'link_url', 'link_visible', 'link_rating', 'link_owner', 'link_updated', 'link_notes', 'link_description' );
			foreach ( explode( ',', $orderby ) as $ordparam ) {
				$ordparam = trim( $ordparam );

if ( in_array( 'link_' . $ordparam, $keys ) ) {
					$orderparams[] = 'link_' . $ordparam;
				} elseif ( in_array( $ordparam, $keys ) ) {
					$orderparams[] = $ordparam;
				}
			}
			$orderby = implode( ',', $orderparams );
	}

if ( empty( $orderby ) ) {
		$orderby = 'link_name';
	}

$order = strtoupper( $r['order'] );
	if ( '' !== $order && ! in_array( $order, array( 'ASC', 'DESC' ) ) ) {
		$order = 'ASC';
	}

$visible = '';
	if ( $r['hide_invisible'] ) {
		$visible = "AND link_visible = 'Y'";
	}

$query  = "SELECT * $length $recently_updated_test $get_updated FROM $wpdb->links $join WHERE 1=1 $visible $category_query";
	$query .= " $exclusions $inclusions $search";
	$query .= " ORDER BY $orderby $order";
	if ( $r['limit'] != -1 ) {
		$query .= ' LIMIT ' . $r['limit'];
	}

$results = $wpdb->get_results( $query );

if ( 'rand()' !== $orderby ) {
		$cache[ $key ] = $results;
		wp_cache_set( 'get_bookmarks', $cache, 'bookmark' );
	}

/** This filter is documented in site-inc/bookmark.php */
	return apply_filters( 'get_bookmarks', $results, $r );
}

/**
 * Sanitizes all bookmark fields
 *
 * @since 2.3.0
 *
 * @param stdClass|array $bookmark Bookmark row
 * @param string $context Optional, default is 'display'. How to filter the
 *      fields
 * @return stdClass|array Same type as $bookmark but with fields sanitized.
 */
function sanitize_bookmark( $bookmark, $context = 'display' ) {
	$fields = array(
		'link_id',
		'link_url',
		'link_name',
		'link_image',
		'link_target',
		'link_category',
		'link_description',
		'link_visible',
		'link_owner',
		'link_rating',
		'link_updated',
		'link_rel',
		'link_notes',
		'link_rss',
	);

if ( is_object( $bookmark ) ) {
		$do_object = true;
		$link_id   = $bookmark->link_id;
	} else {
		$do_object = false;
		$link_id   = $bookmark['link_id'];
	}

foreach ( $fields as $field ) {
		if ( $do_object ) {
			if ( isset( $bookmark->$field ) ) {
				$bookmark->$field = sanitize_bookmark_field( $field, $bookmark->$field, $link_id, $context );
			}
		} else {
			if ( isset( $bookmark[ $field ] ) ) {
				$bookmark[ $field ] = sanitize_bookmark_field( $field, $bookmark[ $field ], $link_id, $context );
			}
		}
	}

return $bookmark;
}

/**
 * Sanitizes a bookmark field.
 *
 * Sanitizes the bookmark fields based on what the field name is. If the field
 * has a strict value set, then it will be tested for that, else a more generic
 * filtering is applied. After the more strict filter is applied, if the `$context`
 * is 'raw' then the value is immediately return.
 *
 * Hooks exist for the more generic cases. With the 'edit' context, the {@see 'edit_$field'}
 * filter will be called and passed the `$value` and `$bookmark_id` respectively.
 *
 * With the 'db' context, the {@see 'pre_$field'} filter is called and passed the value.
 * The 'display' context is the final context and has the `$field` has the filter name
 * and is passed the `$value`, `$bookmark_id`, and `$context`, respectively.
 *
 * @since 2.3.0
 *
 * @param string $field       The bookmark field.
 * @param mixed  $value       The bookmark field value.
 * @param int    $bookmark_id Bookmark ID.
 * @param string $context     How to filter the field value. Accepts 'raw', 'edit', 'attribute',
 *                            'js', 'db', or 'display'
 * @return mixed The filtered value.
 */
function sanitize_bookmark_field( $field, $value, $bookmark_id, $context ) {
	switch ( $field ) {
		case 'link_id': // ints
		case 'link_rating':
			$value = (int) $value;
			break;
		case 'link_category': // array( ints )
			$value = array_map( 'absint', (array) $value );
			// We return here so that the categories aren't filtered.
			// The 'link_category' filter is for the name of a link category, not an array of a link's link categories
			return $value;

case 'link_visible': // bool stored as Y|N
			$value = preg_replace( '/[^YNyn]/', '', $value );
			break;
		case 'link_target': // "enum"
			$targets = array( '_top', '_blank' );
			if ( ! in_array( $value, $targets ) ) {
				$value = '';
			}
			break;
	}

if ( 'raw' == $context ) {
		return $value;
	}

if ( 'edit' == $context ) {
		/** This filter is documented in site-inc/post.php */
		$value = apply_filters( "edit_{$field}", $value, $bookmark_id );

if ( 'link_notes' == $field ) {
			$value = esc_html( $value ); // textarea_escaped
		} else {
			$value = esc_attr( $value );
		}
	} elseif ( 'db' == $context ) {
		/** This filter is documented in site-inc/post.php */
		$value = apply_filters( "pre_{$field}", $value );
	} else {
		/** This filter is documented in site-inc/post.php */
		$value = apply_filters( "{$field}", $value, $bookmark_id, $context );

if ( 'attribute' == $context ) {
			$value = esc_attr( $value );
		} elseif ( 'js' == $context ) {
			$value = esc_js( $value );
		}
	}

return $value;
}

/**
 * Deletes the bookmark cache.
 *
 * @since 2.7.0
 *
 * @param int $bookmark_id Bookmark ID.
 */
function clean_bookmark_cache( $bookmark_id ) {
	wp_cache_delete( $bookmark_id, 'bookmark' );
	wp_cache_delete( 'get_bookmarks', 'bookmark' );
	clean_object_term_cache( $bookmark_id, 'link' );
}

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