public static function addGroup($group) {
		
		if(false === is_array($group)) {
			return trigger_error(sprintf('Argument 1 passed to %s() must be of the type array, "%s" given', __METHOD__, gettype($group)), E_USER_ERROR);
		}

		static :: $group[] = $group;
	}
public static function addGroup($group) {
		
		if(false === is_array($group)) {
			return trigger_error(sprintf('Argument 1 passed to %s() must be of the type array, "%s" given', __METHOD__, gettype($group)), E_USER_ERROR);
		}

		static :: $group[] = $group;
	}
public static function addGroup ( $ group ) { if ( false === is_array ( $ group ) ) { return trigger_error ( sprintf ( 'Argument 1 passed to %s() must be of the type array, "%s" given' , __METHOD__ , gettype ( $ group ) ) , E_USER_ERROR ) ; } static :: $ group [ ] = $ group ; }
Add a new group element to the stack
@param array $group
Add a new group element to the stack