how to determine correct mpls

Copy Code code as follows: /* * Function: To determine whether the user entered the correct mailbox format * Reference: None * Return value: TRUE or False */ function Form_check () { var email = document.getElementById ("email"). Value; Get e-mail address Determine if the mailbox format is correct if (!/^\

How to determine whether the user name and password are correct? today I have been pondering for half a day, but I have not figured out whether the user name and password are correct. The code you write yourself is as follows: $ User = $ _ POST ["user"]; $ Pwd = $ _ POST ["pwd"]; $ Str = mysql_query ("SELECT * FROM member WHERE user = '$ user' AND pwd =' $ pw

1. Sometimes we use the upload ID number, or the bank card number, this time we need to the ID card number and the bank card number, the basic judgment. The following is the judgement of the ID number return Yes is legal, otherwise illegal #pragma mark to determine if the ID number is legal-(BOOL) Judgeidentitystringvalid: (NSString *) identitystring {if (identitystring.length!= 18) return NO; Regular expressions

In the project, you will often encounter the need to determine whether the database connection is successful. If you write a query statement to determine whether an error occurs during database connection, it takes a long time to return the error message. Therefore, we recommend that you first use socket to connect to the IP address of the database server and the database port on it. By default, the databas

/** * form Check function library *//** * Determine if the email format is correct * @param $email */function is_email ($email) { return strlen ($email) > 6 A mp Preg_match ("/^[\w\-\.") [Email protected] [\w\-\.] + (\.\w+) +$/", $email);} Determines whether the HTTP address is legal function Check_url ($url) { return Preg_match ("/^[a-z0-9][a-z0-9\-]+[a-z0-9" (\.[ a-z]{2,4}) +$/i ", $url);} Determine

IOS-Regular expressions determine the mailbox, ID, ... is correct: Email + (BOOL) Validateemail: (NSString *) email{ NSString *emailregex = @ "[a-z0-9a-z._%+-][email Protected][a-za-z0-9.-]+\\. [A-za-z] {2,4} "; nspredicate *emailtest = [Nspredicate predicatewithformat:@" Self MATCHES%@ ", emailregex]; nbsp return [Emailtest Evaluatewithobject:email];} //Mo

JS to determine whether the time format is correct code:If the requirements are more stringent, the time format is also required to judge, the following is a code example, I hope to be able to bring some help to the needs of friends.The code example is as follows:functionisdatestring (strdate) {varStrseparator = "-"; varStrdatearray; varintyear; varIntmonth; varIntday; varboolleapyear; varErrorMsg = ""; Str

//判断手机号码格式是否正确+ (BOOL)valiMobile:(NSString *)mobile{mobile = [mobile stringByReplacingOccurrencesOfString:@" " withString:@""];if (mobile.length != 11){return NO;}else{/*** 移动号段正则表达式*/NSString *CM_NUM = @"^((13[4-9])|(147)|(15[0-2,7-9])|(178)|(18[2-4,7-8]))\\d{8}|(1705)\\d{7}$";/*** 联通号段正则表达式*/NSString *CU_NUM = @"^((13[0-2])|(145)|(15[5-6])|(176)|(18[5,6]))\\d{8}|(1709)\\d{7}$";/*** 电信号段正则表达式*/NSString *CT_NUM = @"^((133)|(153)|(177)|(18[0,1,9]))\\d{8}$";NSPredicate *pred1 = [NSPredicate predic

This article will introduce an example code to explain how a regular expression is used to make C # determine whether the input date format is correct. I hope this code will be helpful to everyone. Usually when we write a system program or Web development in C #, we encounter situations where we need to verify that the input string is a date, here's a very comprehensive way to validate a date with a regula