正则表达式

手机号码的有效性判断

//检测是否是手机号码  
- (BOOL)isMobileNumber:(NSString *)mobileNum  
{  
    /** 
     * 手机号码 
     * 移动：134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188 
     * 联通：130,131,132,152,155,156,185,186 
     * 电信：133,1349,153,180,189 
     */  
    NSString * MOBILE = @"^1(3[0-9]|5[0-35-9]|8[025-9])\\d{8}$";  
    /** 
     10         * 中国移动：China Mobile 
     11         * 134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188 
     12         */  
    NSString * CM = @"^1(34[0-8]|(3[5-9]|5[017-9]|8[278])\\d)\\d{7}$";  
/** 
     15         * 中国联通：China Unicom 
     16         * 130,131,132,152,155,156,185,186 
     17         */  
    NSString * CU = @"^1(3[0-2]|5[256]|8[56])\\d{8}$";  
    /** 
     20         * 中国电信：China Telecom 
     21         * 133,1349,153,180,189 
     22         */  
    NSString * CT = @"^1((33|53|8[09])[0-9]|349)\\d{7}$";  
    /** 
     25         * 大陆地区固话及小灵通 
     26         * 区号：010,020,021,022,023,024,025,027,028,029 
     27         * 号码：七位或八位 
     28         */  
    // NSString * PHS = @"^0(10|2[0-5789]|\\d{3})\\d{7,8}$";  

    NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", MOBILE];  
    NSPredicate *regextestcm = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM];  
    NSPredicate *regextestcu = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU];  
    NSPredicate *regextestct = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT];  

    if (([regextestmobile evaluateWithObject:mobileNum] == YES)  
    || ([regextestcm evaluateWithObject:mobileNum] == YES)  
    || ([regextestct evaluateWithObject:mobileNum] == YES)  
    || ([regextestcu evaluateWithObject:mobileNum] == YES))  
        {  
        return YES;  
        }  
    else  
        {  
        return NO;  
        }  
}

感谢http://blog.csdn.net/hopedark/article/details/41545891

合法邮箱

用这个RegexKitLite三方, 但还是不够完美我觉得, 似乎没有[email protected]这种也合法的邮箱

#import 

NSString *email = @"[email protected]";
NSString *regex = @"\\b([a-zA-Z0-9%_.+\\-]+)@([a-zA-Z0-9.\\-]+?\\.[a-zA-Z]{2,6})\\b";
if ([email isMatchedByRegex:regex]) {
    NSLog(@"合法");
} else {
    NSLog(@"不合法");
}