function replace($search,$replace){
		$this->_String = str_replace($search,$replace,$this->_String);
	}
function replace($search,$replace){
		$this->_String = str_replace($search,$replace,$this->_String);
	}
function replace ( $ search , $ replace ) { $ this -> _String = str_replace ( $ search , $ replace , $ this -> _String ) ; }
Replace part of string in buffer

@param string $search
@param string $replace
Replace part of string in buffer