16进制颜色转换为RGB色值hex2rgb

 
/**
 * 16进制颜色转换为RGB色值
 * @method hex2rgb
 */
function hex2rgb($hexColor) {

    $color = str_replace('#', '', $hexColor);
    if (strlen($color) > 3) {
        $rgb = array(
            '0' => hexdec(substr($color, 0, 2)),
            '1' => hexdec(substr($color, 2, 2)),
            '2' => hexdec(substr($color, 4, 2))
        );
    } else {
        $color = str_replace('#', '', $hexColor);
        $r = substr($color, 0, 1) . substr($color, 0, 1);
        $g = substr($color, 1, 1) . substr($color, 1, 1);
        $b = substr($color, 2, 1) . substr($color, 2, 1);
        $rgb = array(
            '0' => hexdec($r),
            '1' => hexdec($g),
            '2' => hexdec($b)
        );
    }

    return $rgb;
}