apply_filters_ref_array

Source code

function apply_filters_ref_array($tag, $args) {

	global $wp_filter, $merged_filters, $wp_current_filter;



	// Do 'all' actions first

	if ( isset($wp_filter['all']) ) {

		$wp_current_filter[] = $tag;

		$all_args = func_get_args();

		_wp_call_all_hook($all_args);

	}



	if ( !isset($wp_filter[$tag]) ) {

		if ( isset($wp_filter['all']) )

			array_pop($wp_current_filter);

		return $args[0];

	}



	if ( !isset($wp_filter['all']) )

		$wp_current_filter[] = $tag;



	// Sort

	if ( !isset( $merged_filters[ $tag ] ) ) {

		ksort($wp_filter[$tag]);

		$merged_filters[ $tag ] = true;

	}



	reset( $wp_filter[ $tag ] );



	do {

		foreach( (array) current($wp_filter[$tag]) as $the_ )

			if ( !is_null($the_['function']) )

				$args[0] = call_user_func_array($the_['function'], array_slice($args, 0, (int) $the_['accepted_args']));



	} while ( next($wp_filter[$tag]) !== false );



	array_pop( $wp_current_filter );



	return $args[0];

}