function push($key,$val) {
		$ref=&$this->ref($key);
		$ref[]=$val;
		return $val;
	}
function push($key,$val) {
		$ref=&$this->ref($key);
		$ref[]=$val;
		return $val;
	}
function push ( $ key , $ val ) { $ ref = & $ this -> ref ( $ key ) ; $ ref [ ] = $ val ; return $ val ; }
Add element to the end of hive array variable
@return mixed
@param $key string
@param $val mixed
Add element to the end of hive array variable