电话号码 校验

/// 校验手机号

    func checkMobile(mobileNumbel:NSString) ->Bool
    {
        let CT = "^((13[0-9])|(15[0-9])|(18[0-9])|(14[0-9])|(17[0-9]))\\d{8}$";
        let regextestct = NSPredicate(format: "SELF MATCHES %@", CT)
        if regextestct.evaluate(with: mobileNumbel) {
            return true
        }
        return false
    }