PHPの16進数のカラーをRGBに変換する方法

/**
     * 十六进制转RGB
     * 
     * @param string $color 16进制颜色值
     * @return array
     */
    public static function hex2rgb($color) {
        $hexColor = str_replace('#', '', $color);
        $lens = strlen($hexColor);
        if ($lens != 3 && $lens != 6) {
            return false;
        }
        $newcolor = '';
        if ($lens == 3) {
            for ($i = 0; $i < $lens; $i++) {
                $newcolor .= $hexColor[$i] . $hexColor[$i];
            }
        } else {
            $newcolor = $hexColor;
        }
        $hex = str_split($newcolor, 2);
        $rgb = [];
        foreach ($hex as $key => $vls) {
            $rgb[] = hexdec($vls);
        }
        return $rgb;
    }