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<?php
/**
* File: Util_Bus.php
*
* @package W3TC
*/
namespace W3TC;
/**
* Class Util_Bus
*/
class Util_Bus {
/**
* Add W3TC action callback
*
* @param string $key Key.
* @param mixed $callback Callback.
*
* @return void
*/
public static function add_ob_callback( $key, $callback ) {
$GLOBALS['_w3tc_ob_callbacks'][ $key ] = $callback;
}
/**
* Do W3TC action callbacks
*
* @param array $order Order.
* @param mixed $value Value.
*
* @return mixed
*/
public static function do_ob_callbacks( $order, $value ) {
foreach ( $order as $key ) {
if ( isset( $GLOBALS['_w3tc_ob_callbacks'][ $key ] ) ) {
$callback = $GLOBALS['_w3tc_ob_callbacks'][ $key ];
if ( is_callable( $callback ) ) {
$value = call_user_func( $callback, $value );
}
}
}
return $value;
}
}