regular expression for email validation

Most of the mailbox verification code is a domain name that cannot be verified with a letter or a letter of the user name, such as: I@fufuok.com or fufu@9.cn. Here's how to fix it: 1, does not make the total length judgment, the length judgment may add oneself; 2, support. net.cn,.com.cn such a domain name suffix; 3, the mailbox Name section begins with a letter or a number, the middle can have "-" and "_" symbol; 4, the Domain name section begins with a letter or a number, the middle can have "

This article mainly introduces php mail address regular expression verification. the php language is used to implement the e-mail address verification program, which uses the php regular expression library, if you are interested, you can refer to the verification we most often encounter, that is,

The code is as follows Copy Code function Funcemail ($STR)//mailbox Regular expression{Return (Preg_match ('/^[_.0-9a-z-a-z-]+@) ([0-9a-z][0-9a-z-]+.) +[a-z]{2,4}$/', $str))? True:false;} Validation method One The code is as follows Copy Code $str = "qbcd@126.com.cn";Preg_match ("/^[0-9a-z]+@" ([0-9a-z]+) [.]

How do we use to check the Regular Expression of email? What are the steps required to check the Regular Expression of email? The operation instance for checking the Regular

In the past, the regular expression was used to open the syntax document of the regular expression, and then re-reference and compare it one by one. Once it is used, it will be left behind, so I forget it every time I use it, every time I come back, no wonder the regular

Regular Expression for email address verification Email address verification in dedecms CopyCodeThe Code is as follows: $ Email = "test@jb51.com ";// Check the email format Function checkemail ($

Example of php regular expression verification Email address This article introduces the example of using regular expressions in php to verify the Email address. For more information, see.Php implements an example of verifying the

, including excepting, 1, 3, 5, 7, 8, 10, December all included 31st(0[13578]|1[02])-31)All other dates except February 29 in a leap year(?! 0000) [0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|1[0-9]|2[0-8]) | ( 0[13-9]|1[0-2])-(29|30) | (0[13578]|1[02])-31) Then we'll solve the second difficulty: Leap year considerations. Based on the definition of leap years, we can divide a leap year into two categories: 1 years that can be divisible by 4 but not divisible by 100. Looking for the change rule of the latt

, -}$ the correct format is: Start with a letter, length in 6-18, only characters, numbers, and underscores can be included. Verify that you contain^%',; =?$\ "and other characters:[^%',; =?$\x22]+Verify Kanji:^[\u4e00-\u9fa5],{0,}$ Verify email address:^\w+[-+.] \w+) *@\w+ ([-.] \w+) *\.\w+ ([-.] \w+) *$ verify InternetURL:^http://([\w-]+\.) +[\w-]+ (/[\w-./?%=]*)? $; ^[a-za-z]+://(w+ (-w+) *) (. ( w+ (-w+) *) * (? s*)? $ verify Phone Number:^ (\ (\d

Use a regular expression to verify the email address and mobile phone number Regular Expression, also known as Regular Expression and Regular