public function getWhere($key)
    {
        foreach( $this->where as $w ) {
            if( $w[0] === $key ) {
                return $w[1];
            }
        }
        return null;
    }
public function getWhere($key)
    {
        foreach( $this->where as $w ) {
            if( $w[0] === $key ) {
                return $w[1];
            }
        }
        return null;
    }
public function getWhere ( $ key ) { foreach ( $ this -> where as $ w ) { if ( $ w [ 0 ] === $ key ) { return $ w [ 1 ] ; } } return null ; }
Get the specified where

@param string $key
@return mixed
Get the specified where