public function getRgba(){
        $rgba = $this->hexToRgb( $this->hexString );
        $rgba[] = $this->alpha;
        return $rgba;
    }
public function getRgba(){
        $rgba = $this->hexToRgb( $this->hexString );
        $rgba[] = $this->alpha;
        return $rgba;
    }
public function getRgba ( ) { $ rgba = $ this -> hexToRgb ( $ this -> hexString ) ; $ rgba [ ] = $ this -> alpha ; return $ rgba ; }
Get RGBA array

@return array Contains array($r, $g, $b, $a)
Get RGBA array