//判断是否是合法的电话号码

+ (BOOL)isChinaMobile:(NSString *)phoneNum{

    BOOL isChinaMobile = NO;

    

    NSString *CM = @"(^1(3[4-9]|4[7]|5[0-27-9]|7[8]|8[2-478])\\d{8}$)|(^1705\\d{7}$)";

    NSPredicate *regextestcm = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM];

    if([regextestcm evaluateWithObject:phoneNum] == YES){

        isChinaMobile = YES;

        //        NSLog(@"中国移动");

    }

    

    NSString *CU = @"(^1(3[0-2]|4[5]|5[56]|7[6]|8[56])\\d{8}$)|(^1709\\d{7}$)";

    NSPredicate *regextestcu = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU];

    if([regextestcu evaluateWithObject:phoneNum] == YES){

        isChinaMobile = YES;

        //        NSLog(@"中国联通");

    }

    

    NSString *CT = @"(^1(33|53|77|8[019])\\d{8}$)|(^1700\\d{7}$)";

    NSPredicate *regextestct = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT];

    if([regextestct evaluateWithObject:phoneNum] == YES){

        isChinaMobile = YES;

        //        NSLog(@"中国电信");

    }

    return isChinaMobile;

}

//判断是否是合法的邮箱

+ (BOOL)validateEmail:(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];

}