public function hasDataEntry($id, $column)
    {
        return isset($this->data[$id]) and array_key_exists($column, $this->data[$id]);
    }
public function hasDataEntry($id, $column)
    {
        return isset($this->data[$id]) and array_key_exists($column, $this->data[$id]);
    }
public function hasDataEntry ( $ id , $ column ) { return isset ( $ this -> data [ $ id ] ) and array_key_exists ( $ column , $ this -> data [ $ id ] ) ; }
Tells whether row with given id has given column

@param mixed $id
@param string $column
@return bool
Tells whether row with given id has given column