iOS 常用正则校验

//校验密码

+(BOOL)checkPass:(NSString*)pass

{

if(pass==nil)

{

return NO;

}

NSString *regex = @"^[A-Za-z0-9]+$";

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@ AND SELF.length > 5 AND SELF.length < 17", regex];

return [predicate evaluateWithObject:pass];

}

//校验电话号码

+(BOOL)checkIsPhone:(NSString*)str

{

NSString *regex = @"(13[0-9]|14[57]|15[0123456789]|18[023456789])\\d{8}";

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];

return [predicate evaluateWithObject:str];

}

//校验是否是数字

+(BOOL)checkIsNumber:(NSString*)str

{

if(str==nil)

{

return NO;

}

NSString *regex = @"^(([0-9]+\\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\\.[0-9]+)|([0-9]*[1-9][0-9]*))$";//@"^[0-9]+$";

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@ ", regex];

return [predicate evaluateWithObject:str];

}

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//身份证号

+ (BOOL)CheckIsIdentityCard: (NSString *)identityCard

{

//判断是否为空

if (identityCard==nil||identityCard.length <= 0) {

return NO;

}

//判断是否是18位，末尾是否是x

NSString *regex2 = @"^(\\d{14}|\\d{17})(\\d|[xX])$";

NSPredicate *identityCardPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];

if(![identityCardPredicate evaluateWithObject:identityCard]){

return NO;

}

//判断生日是否合法

NSRange range = NSMakeRange(6,8);

NSString *datestr = [identityCard substringWithRange:range];

NSDateFormatter *formatter = [[NSDateFormatter alloc] init];

[formatter setDateFormat : @"yyyyMMdd"];

if([formatter dateFromString:datestr]==nil){

return NO;

}

//判断校验位

if(identityCard.length==18)

{

NSArray *idCardWi= @[ @"7", @"9", @"10", @"5", @"8", @"4", @"2", @"1", @"6", @"3", @"7", @"9", @"10", @"5", @"8", @"4", @"2" ]; //将前17位加权因子保存在数组里

NSArray * idCardY=@[ @"1", @"0", @"10", @"9", @"8", @"7", @"6", @"5", @"4", @"3", @"2" ]; //这是除以11后，可能产生的11位余数、验证码，也保存成数组

int idCardWiSum=0; //用来保存前17位各自乖以加权因子后的总和

for(int i=0;i<17;i++){

idCardWiSum+=[[identityCard substringWithRange:NSMakeRange(i,1)] intValue]*[idCardWi[i] intValue];

}

int idCardMod=idCardWiSum%11;//计算出校验码所在数组的位置

NSString *idCardLast=[identityCard substringWithRange:NSMakeRange(17,1)];//得到最后一位身份证号码

//如果等于2，则说明校验码是10，身份证号码最后一位应该是X

if(idCardMod==2){

if([idCardLast isEqualToString:@"X"]||[idCardLast isEqualToString:@"x"]){

return YES;

}else{

return NO;

}

}else{

//用计算出的验证码与最后一位身份证号码匹配，如果一致，说明通过，否则是无效的身份证号码

if([idCardLast intValue]==[idCardY[idCardMod] intValue]){

return YES;

}else{

return NO;

}

}

}

return NO;

}