function replace($search,$replace){
		$this->_String = $this->toString();
		return parent::replace($search,$replace);
	}
function replace($search,$replace){
		$this->_String = $this->toString();
		return parent::replace($search,$replace);
	}
function replace ( $ search , $ replace ) { $ this -> _String = $ this -> toString ( ) ; return parent :: replace ( $ search , $ replace ) ; }
Replaces part of a string with another string.

@param string $search
@param string $replace
Replaces part of a string with another string .