public function lastIndexOf($value){
		
		$i = $this->count() - 1;
		
		while($i >= 0 && $this->_Arr[$i] !== $value){
			--$i;
		}
		
		return $i;
		
	}
public function lastIndexOf($value){
		
		$i = $this->count() - 1;
		
		while($i >= 0 && $this->_Arr[$i] !== $value){
			--$i;
		}
		
		return $i;
		
	}
public function lastIndexOf ( $ value ) { $ i = $ this -> count ( ) - 1 ; while ( $ i >= 0 && $ this -> _Arr [ $ i ] !== $ value ) { -- $ i ; } return $ i ; }
Returns the index of the last matching value
@param mixed $value
@return int -1 if not found
Returns the index of the last matching value