NSMutableString *temp = [@"1234567" mutableCopy];
[temp replaceOccurrencesOfString:@"[1236]" withString:@"" options:NSRegularExpressionSearch range:NSMakeRange(0, temp.length)];
NSLog(@"%@", temp);
NSMutableString *temp = [@"1234567" mutableCopy];
[temp replaceOccurrencesOfString:@"[1236]" withString:@"" options:NSRegularExpressionSearch range:NSMakeRange(0, temp.length)];
NSLog(@"%@", temp);