wp++
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Nikolai R Kristiansen committed
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@@ -14,23 +14,28 @@
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* Also see the {@link https://codex.wordpress.org/Plugin_API Plugin API} for
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* more information and examples on how to use a lot of these functions.
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*
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* This file should have no external dependencies.
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*
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* @package WordPress
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* @subpackage Plugin
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* @since 1.5.0
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*/
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// Initialize the filter globals.
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global $wp_filter, $wp_actions, $merged_filters, $wp_current_filter;
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require( dirname( __FILE__ ) . '/class-wp-hook.php' );
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if ( ! isset( $wp_filter ) )
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/** @var WP_Hook[] $wp_filter */
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global $wp_filter, $wp_actions, $wp_current_filter;
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if ( $wp_filter ) {
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$wp_filter = WP_Hook::build_preinitialized_hooks( $wp_filter );
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} else {
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$wp_filter = array();
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}
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if ( ! isset( $wp_actions ) )
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$wp_actions = array();
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if ( ! isset( $merged_filters ) )
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$merged_filters = array();
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if ( ! isset( $wp_current_filter ) )
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$wp_current_filter = array();
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@@ -87,8 +92,6 @@ if ( ! isset( $wp_current_filter ) )
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* @since 0.71
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*
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* @global array $wp_filter A multidimensional array of all hooks and the callbacks hooked to them.
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* @global array $merged_filters Tracks the tags that need to be merged for later. If the hook is added,
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* it doesn't need to run through that process.
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*
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* @param string $tag The name of the filter to hook the $function_to_add callback to.
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* @param callable $function_to_add The callback to be run when the filter is applied.
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@@ -101,11 +104,11 @@ if ( ! isset( $wp_current_filter ) )
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* @return true
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*/
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function add_filter( $tag, $function_to_add, $priority = 10, $accepted_args = 1 ) {
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global $wp_filter, $merged_filters;
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$idx = _wp_filter_build_unique_id($tag, $function_to_add, $priority);
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$wp_filter[$tag][$priority][$idx] = array('function' => $function_to_add, 'accepted_args' => $accepted_args);
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unset( $merged_filters[ $tag ] );
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global $wp_filter;
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if ( ! isset( $wp_filter[ $tag ] ) ) {
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$wp_filter[ $tag ] = new WP_Hook();
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}
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$wp_filter[ $tag ]->add_filter( $tag, $function_to_add, $priority, $accepted_args );
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return true;
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}
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@@ -126,38 +129,13 @@ function add_filter( $tag, $function_to_add, $priority = 10, $accepted_args = 1
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* return value.
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*/
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function has_filter($tag, $function_to_check = false) {
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// Don't reset the internal array pointer
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$wp_filter = $GLOBALS['wp_filter'];
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global $wp_filter;
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$has = ! empty( $wp_filter[ $tag ] );
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// Make sure at least one priority has a filter callback
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if ( $has ) {
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$exists = false;
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foreach ( $wp_filter[ $tag ] as $callbacks ) {
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if ( ! empty( $callbacks ) ) {
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$exists = true;
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break;
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}
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}
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if ( ! $exists ) {
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$has = false;
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}
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}
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if ( false === $function_to_check || false === $has )
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return $has;
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if ( !$idx = _wp_filter_build_unique_id($tag, $function_to_check, false) )
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if ( ! isset( $wp_filter[ $tag ] ) ) {
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return false;
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foreach ( (array) array_keys($wp_filter[$tag]) as $priority ) {
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if ( isset($wp_filter[$tag][$priority][$idx]) )
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return $priority;
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}
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return false;
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return $wp_filter[ $tag ]->has_filter( $tag, $function_to_check );
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}
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/**
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@@ -188,7 +166,6 @@ function has_filter($tag, $function_to_check = false) {
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* @since 0.71
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*
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* @global array $wp_filter Stores all of the filters.
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* @global array $merged_filters Merges the filter hooks using this function.
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* @global array $wp_current_filter Stores the list of current filters with the current one last.
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*
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* @param string $tag The name of the filter hook.
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@@ -197,7 +174,7 @@ function has_filter($tag, $function_to_check = false) {
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* @return mixed The filtered value after all hooked functions are applied to it.
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*/
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function apply_filters( $tag, $value ) {
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global $wp_filter, $merged_filters, $wp_current_filter;
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global $wp_filter, $wp_current_filter;
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$args = array();
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@@ -217,29 +194,17 @@ function apply_filters( $tag, $value ) {
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if ( !isset($wp_filter['all']) )
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$wp_current_filter[] = $tag;
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// Sort.
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if ( !isset( $merged_filters[ $tag ] ) ) {
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ksort($wp_filter[$tag]);
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$merged_filters[ $tag ] = true;
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}
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reset( $wp_filter[ $tag ] );
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if ( empty($args) )
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$args = func_get_args();
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do {
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foreach ( (array) current($wp_filter[$tag]) as $the_ )
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if ( !is_null($the_['function']) ){
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$args[1] = $value;
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$value = call_user_func_array($the_['function'], array_slice($args, 1, (int) $the_['accepted_args']));
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}
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// don't pass the tag name to WP_Hook
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array_shift( $args );
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} while ( next($wp_filter[$tag]) !== false );
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$filtered = $wp_filter[ $tag ]->apply_filters( $value, $args );
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array_pop( $wp_current_filter );
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return $value;
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return $filtered;
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}
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/**
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@@ -251,7 +216,6 @@ function apply_filters( $tag, $value ) {
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* functions hooked to `$tag` are supplied using an array.
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*
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* @global array $wp_filter Stores all of the filters
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* @global array $merged_filters Merges the filter hooks using this function.
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* @global array $wp_current_filter Stores the list of current filters with the current one last
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*
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* @param string $tag The name of the filter hook.
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@@ -259,7 +223,7 @@ function apply_filters( $tag, $value ) {
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* @return mixed The filtered value after all hooked functions are applied to it.
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*/
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function apply_filters_ref_array($tag, $args) {
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global $wp_filter, $merged_filters, $wp_current_filter;
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global $wp_filter, $wp_current_filter;
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// Do 'all' actions first
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if ( isset($wp_filter['all']) ) {
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@@ -277,24 +241,11 @@ function apply_filters_ref_array($tag, $args) {
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if ( !isset($wp_filter['all']) )
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$wp_current_filter[] = $tag;
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// Sort
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if ( !isset( $merged_filters[ $tag ] ) ) {
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ksort($wp_filter[$tag]);
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$merged_filters[ $tag ] = true;
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}
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reset( $wp_filter[ $tag ] );
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do {
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foreach ( (array) current($wp_filter[$tag]) as $the_ )
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if ( !is_null($the_['function']) )
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$args[0] = call_user_func_array($the_['function'], array_slice($args, 0, (int) $the_['accepted_args']));
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} while ( next($wp_filter[$tag]) !== false );
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$filtered = $wp_filter[ $tag ]->apply_filters( $args[0], $args );
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array_pop( $wp_current_filter );
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return $args[0];
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return $filtered;
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}
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/**
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@@ -311,7 +262,6 @@ function apply_filters_ref_array($tag, $args) {
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* @since 1.2.0
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*
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* @global array $wp_filter Stores all of the filters
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* @global array $merged_filters Merges the filter hooks using this function.
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*
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* @param string $tag The filter hook to which the function to be removed is hooked.
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* @param callable $function_to_remove The name of the function which should be removed.
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@@ -319,19 +269,14 @@ function apply_filters_ref_array($tag, $args) {
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* @return bool Whether the function existed before it was removed.
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*/
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function remove_filter( $tag, $function_to_remove, $priority = 10 ) {
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$function_to_remove = _wp_filter_build_unique_id( $tag, $function_to_remove, $priority );
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global $wp_filter;
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$r = isset( $GLOBALS['wp_filter'][ $tag ][ $priority ][ $function_to_remove ] );
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if ( true === $r ) {
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unset( $GLOBALS['wp_filter'][ $tag ][ $priority ][ $function_to_remove ] );
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if ( empty( $GLOBALS['wp_filter'][ $tag ][ $priority ] ) ) {
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unset( $GLOBALS['wp_filter'][ $tag ][ $priority ] );
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$r = false;
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if ( isset( $wp_filter[ $tag ] ) ) {
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$r = $wp_filter[ $tag ]->remove_filter( $tag, $function_to_remove, $priority );
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if ( ! $wp_filter[ $tag ]->callbacks ) {
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unset( $wp_filter[ $tag ] );
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}
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if ( empty( $GLOBALS['wp_filter'][ $tag ] ) ) {
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$GLOBALS['wp_filter'][ $tag ] = array();
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}
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unset( $GLOBALS['merged_filters'][ $tag ] );
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}
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return $r;
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@@ -342,26 +287,22 @@ function remove_filter( $tag, $function_to_remove, $priority = 10 ) {
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*
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* @since 2.7.0
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*
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* @global array $wp_filter Stores all of the filters
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* @global array $merged_filters Merges the filter hooks using this function.
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* @global array $wp_filter Stores all of the filters
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*
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* @param string $tag The filter to remove hooks from.
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* @param int|bool $priority Optional. The priority number to remove. Default false.
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* @return true True when finished.
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*/
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function remove_all_filters( $tag, $priority = false ) {
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global $wp_filter, $merged_filters;
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global $wp_filter;
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if ( isset( $wp_filter[ $tag ]) ) {
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if ( false === $priority ) {
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$wp_filter[ $tag ] = array();
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} elseif ( isset( $wp_filter[ $tag ][ $priority ] ) ) {
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$wp_filter[ $tag ][ $priority ] = array();
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$wp_filter[ $tag ]->remove_all_filters( $priority );
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if ( ! $wp_filter[ $tag ]->has_filters() ) {
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unset( $wp_filter[ $tag ] );
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}
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}
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unset( $merged_filters[ $tag ] );
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return true;
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}
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@@ -471,7 +412,6 @@ function add_action($tag, $function_to_add, $priority = 10, $accepted_args = 1)
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*
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* @global array $wp_filter Stores all of the filters
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* @global array $wp_actions Increments the amount of times action was triggered.
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* @global array $merged_filters Merges the filter hooks using this function.
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* @global array $wp_current_filter Stores the list of current filters with the current one last
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*
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* @param string $tag The name of the action to be executed.
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@@ -479,7 +419,7 @@ function add_action($tag, $function_to_add, $priority = 10, $accepted_args = 1)
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* functions hooked to the action. Default empty.
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*/
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function do_action($tag, $arg = '') {
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global $wp_filter, $wp_actions, $merged_filters, $wp_current_filter;
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global $wp_filter, $wp_actions, $wp_current_filter;
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if ( ! isset($wp_actions[$tag]) )
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$wp_actions[$tag] = 1;
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@@ -510,20 +450,7 @@ function do_action($tag, $arg = '') {
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for ( $a = 2, $num = func_num_args(); $a < $num; $a++ )
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$args[] = func_get_arg($a);
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// Sort
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if ( !isset( $merged_filters[ $tag ] ) ) {
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ksort($wp_filter[$tag]);
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$merged_filters[ $tag ] = true;
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}
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reset( $wp_filter[ $tag ] );
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do {
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foreach ( (array) current($wp_filter[$tag]) as $the_ )
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if ( !is_null($the_['function']) )
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call_user_func_array($the_['function'], array_slice($args, 0, (int) $the_['accepted_args']));
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} while ( next($wp_filter[$tag]) !== false );
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$wp_filter[ $tag ]->do_action( $args );
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array_pop($wp_current_filter);
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}
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@@ -556,14 +483,13 @@ function did_action($tag) {
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* functions hooked to $tag< are supplied using an array.
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* @global array $wp_filter Stores all of the filters
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* @global array $wp_actions Increments the amount of times action was triggered.
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* @global array $merged_filters Merges the filter hooks using this function.
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* @global array $wp_current_filter Stores the list of current filters with the current one last
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*
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* @param string $tag The name of the action to be executed.
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* @param array $args The arguments supplied to the functions hooked to `$tag`.
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*/
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function do_action_ref_array($tag, $args) {
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global $wp_filter, $wp_actions, $merged_filters, $wp_current_filter;
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global $wp_filter, $wp_actions, $wp_current_filter;
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if ( ! isset($wp_actions[$tag]) )
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$wp_actions[$tag] = 1;
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@@ -586,20 +512,7 @@ function do_action_ref_array($tag, $args) {
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if ( !isset($wp_filter['all']) )
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$wp_current_filter[] = $tag;
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// Sort
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if ( !isset( $merged_filters[ $tag ] ) ) {
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ksort($wp_filter[$tag]);
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$merged_filters[ $tag ] = true;
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}
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reset( $wp_filter[ $tag ] );
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do {
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foreach ( (array) current($wp_filter[$tag]) as $the_ )
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if ( !is_null($the_['function']) )
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call_user_func_array($the_['function'], array_slice($args, 0, (int) $the_['accepted_args']));
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} while ( next($wp_filter[$tag]) !== false );
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$wp_filter[ $tag ]->do_action( $args );
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array_pop($wp_current_filter);
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}
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@@ -921,13 +834,7 @@ function register_uninstall_hook( $file, $callback ) {
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function _wp_call_all_hook($args) {
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global $wp_filter;
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reset( $wp_filter['all'] );
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do {
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foreach ( (array) current($wp_filter['all']) as $the_ )
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if ( !is_null($the_['function']) )
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call_user_func_array($the_['function'], $args);
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} while ( next($wp_filter['all']) !== false );
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$wp_filter['all']->do_all_hook( $args );
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}
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/**
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