php用静态类实现获取客户端IP地址的方法

/**
 * Miscellaneous utility methods.
 */
final class Utils {
    private function __construct() {

    }
    /**
     * Get IP address
     * @return string IP address string
     */
    public static function getIpAddress() {
        return $_SERVER["REMOTE_ADDR"];
    }
}
?>

2、调用

$last_login_ip = Utils::getIpAddress();
?>