iOS判斷郵箱,手機號碼，車牌號是否合法的正則表達

/郵箱驗證 MODIFIED BY HELENSONG/
-(BOOL)isValidateEmail:(NSString )email
{
    NSString emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}";
    NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
    return [emailTest evaluateWithObject:email];
}

/手機號碼驗證 MODIFIED BY HELENSONG/
-(BOOL) isValidateMobile:(NSString )mobile
{
    //手機號以13， 15，18開頭，八個 \d 數字字符
    NSString phoneRegex = @"^((13[0-9])|(15[^4,\D])|(18[0,0-9]))\d{8}$";
    NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",phoneRegex];
//    NSLog(@"phoneTest is %@",phoneTest);
    return [phoneTest evaluateWithObject:mobile];
}
/車牌號驗證 MODIFIED BY HELENSONG/
BOOL validateCarNo(NSString carNo)
{
    NSString carRegex = @"^[A-Za-z]{1}[A-Za-z_0-9]{5}$";
    NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",carRegex];
    NSLog(@"carTest is %@",carTest);
    return [carTest evaluateWithObject:carNo];
}</pre>