* @subpackage Plugin
* @since 0.71
* @global array $wp_filter Stores all of the filters added in the form of
- * wp_filter['tag']['array of priorities']['array of functions serialized']['array of ['array (functions, accepted_args)]']
+ * wp_filter['tag']['array of priorities']['array of functions serialized']['array of ['array (functions, accepted_args)']']
* @global array $merged_filters Tracks the tags that need to be merged for later. If the hook is added, it doesn't need to run through that process.
*
* @param string $tag The name of the filter to hook the $function_to_add to.
return $value;
}
+/**
+ * Execute functions hooked on a specific filter hook, specifying arguments in an array.
+ *
+ * @see apply_filters() This function is identical, but the arguments passed to the
+ * functions hooked to <tt>$tag</tt> are supplied using an array.
+ *
+ * @package WordPress
+ * @subpackage Plugin
+ * @since 3.0.0
+ * @global array $wp_filter Stores all of the filters
+ * @global array $merged_filters Merges the filter hooks using this function.
+ * @global array $wp_current_filter stores the list of current filters with the current one last
+ *
+ * @param string $tag The name of the filter hook.
+ * @param array $args The arguments supplied to the functions hooked to <tt>$tag</tt>
+ * @return mixed The filtered value after all hooked functions are applied to it.
+ */
+function apply_filters_ref_array($tag, $args) {
+ global $wp_filter, $merged_filters, $wp_current_filter;
+
+ $wp_current_filter[] = $tag;
+
+ // Do 'all' actions first
+ if ( isset($wp_filter['all']) ) {
+ $all_args = func_get_args();
+ _wp_call_all_hook($all_args);
+ }
+
+ if ( !isset($wp_filter[$tag]) ) {
+ array_pop($wp_current_filter);
+ return $args[0];
+ }
+
+ // 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];
+}
+
/**
* Removes a function from a specified filter hook.
*
global $wp_filter, $merged_filters;
if( isset($wp_filter[$tag]) ) {
- if( false !== $priority && isset($$wp_filter[$tag][$priority]) )
+ if( false !== $priority && isset($wp_filter[$tag][$priority]) )
unset($wp_filter[$tag][$priority]);
else
unset($wp_filter[$tag]);
function do_action($tag, $arg = '') {
global $wp_filter, $wp_actions, $merged_filters, $wp_current_filter;
- if ( is_array($wp_actions) )
- $wp_actions[] = $tag;
+ if ( ! isset($wp_actions) )
+ $wp_actions = array();
+
+ if ( ! isset($wp_actions[$tag]) )
+ $wp_actions[$tag] = 1;
else
- $wp_actions = array($tag);
+ ++$wp_actions[$tag];
$wp_current_filter[] = $tag;
}
$args = array();
- if ( is_array($arg) && 1 == count($arg) && is_object($arg[0]) ) // array(&$this)
+ if ( is_array($arg) && 1 == count($arg) && isset($arg[0]) && is_object($arg[0]) ) // array(&$this)
$args[] =& $arg[0];
else
$args[] = $arg;
function did_action($tag) {
global $wp_actions;
- if ( empty($wp_actions) )
+ if ( ! isset( $wp_actions ) || ! isset( $wp_actions[$tag] ) )
return 0;
- return count(array_keys($wp_actions, $tag));
+ return $wp_actions[$tag];
}
/**
function do_action_ref_array($tag, $args) {
global $wp_filter, $wp_actions, $merged_filters, $wp_current_filter;
- if ( !is_array($wp_actions) )
- $wp_actions = array($tag);
+ if ( ! isset($wp_actions) )
+ $wp_actions = array();
+
+ if ( ! isset($wp_actions[$tag]) )
+ $wp_actions[$tag] = 1;
else
- $wp_actions[] = $tag;
+ ++$wp_actions[$tag];
$wp_current_filter[] = $tag;
$mu_plugin_dir = str_replace('\\','/',WPMU_PLUGIN_DIR); // sanitize for Win32 installs
$mu_plugin_dir = preg_replace('|/+|','/', $mu_plugin_dir); // remove any duplicate slash
$file = preg_replace('#^' . preg_quote($plugin_dir, '#') . '/|^' . preg_quote($mu_plugin_dir, '#') . '/#','',$file); // get relative path from plugins dir
+ $file = trim($file, '/');
return $file;
}
* @since 2.7
*
* @param string $file
- * @param callback $callback The callback to run when the hook is called.
+ * @param callback $callback The callback to run when the hook is called. Must be a static method or function.
*/
-function register_uninstall_hook($file, $callback) {
+function register_uninstall_hook( $file, $callback ) {
+ if ( is_array( $callback ) && is_object( $callback[0] ) ) {
+ _doing_it_wrong( __FUNCTION__, __( 'Only a static class method or function can be used in an uninstall hook.' ), '3.1' );
+ return;
+ }
+
// The option should not be autoloaded, because it is not needed in most
// cases. Emphasis should be put on using the 'uninstall.php' way of
// uninstalling the plugin.
* @param string $tag Used in counting how many hooks were applied
* @param callback $function Used for creating unique id
* @param int|bool $priority Used in counting how many hooks were applied. If === false and $function is an object reference, we return the unique id only if it already has one, false otherwise.
- * @param string $type filter or action
* @return string|bool Unique ID for usage as array key or false if $priority === false and $function is an object reference, and it does not already have a uniqe id.
*/
function _wp_filter_build_unique_id($tag, $function, $priority) {
global $wp_filter;
static $filter_id_count = 0;
- // If function then just skip all of the tests and not overwrite the following.
if ( is_string($function) )
return $function;
- // Object Class Calling
- else if (is_object($function[0]) ) {
- $obj_idx = get_class($function[0]).$function[1];
- if ( !isset($function[0]->wp_filter_id) ) {
- if ( false === $priority )
- return false;
- $obj_idx .= isset($wp_filter[$tag][$priority]) ? count((array)$wp_filter[$tag][$priority]) : 0;
- $function[0]->wp_filter_id = $filter_id_count++;
- } else
- $obj_idx .= $function[0]->wp_filter_id;
- return $obj_idx;
+
+ if ( is_object($function) ) {
+ // Closures are currently implemented as objects
+ $function = array( $function, '' );
+ } else {
+ $function = (array) $function;
}
- // Static Calling
- else if ( is_string($function[0]) )
+
+ if (is_object($function[0]) ) {
+ // Object Class Calling
+ if ( function_exists('spl_object_hash') ) {
+ return spl_object_hash($function[0]) . $function[1];
+ } else {
+ $obj_idx = get_class($function[0]).$function[1];
+ if ( !isset($function[0]->wp_filter_id) ) {
+ if ( false === $priority )
+ return false;
+ $obj_idx .= isset($wp_filter[$tag][$priority]) ? count((array)$wp_filter[$tag][$priority]) : $filter_id_count;
+ $function[0]->wp_filter_id = $filter_id_count;
+ ++$filter_id_count;
+ } else {
+ $obj_idx .= $function[0]->wp_filter_id;
+ }
+
+ return $obj_idx;
+ }
+ } else if ( is_string($function[0]) ) {
+ // Static Calling
return $function[0].$function[1];
+ }
}
?>