public function offsetUnset($offset)
    {
        $key               = array_search($offset, $this->index);
        $this->index[$key] = null;
        unset($this->attributes[$offset]);
    }
public function offsetUnset($offset)
    {
        $key               = array_search($offset, $this->index);
        $this->index[$key] = null;
        unset($this->attributes[$offset]);
    }
public function offsetUnset ( $ offset ) { $ key = array_search ( $ offset , $ this -> index ) ; $ this -> index [ $ key ] = null ; unset ( $ this -> attributes [ $ offset ] ) ; }
Removes an offset.

@param mixed $offset The offset to remove
Removes an offset .