'TD_Model', 'class-td-api-model.php' => 'TD_API_Model', 'class-td-db-model.php' => 'TD_DB_Model', 'class-td-async-action-model.php' => 'TD_Async_Action_Model', ); foreach ($td_util_classes as $filename => $class_name) { if ( !class_exists( $class_name ) ) { include dirname( __FILE__ ) . '/' . $filename; } }