email validation using regular expression in php

PHP email Regular expression validation, e-mail address regular expression The most common verification we encounter is email address verification. Common on the site. Various Web page scripts are also commonly used "regular expressions" (regular

On regular expressions, regular expressions First, what is a regular expression? Simply put: Regular expressions (Regular expression) is a language that handles string matching; A regular expression describes a pattern of string matches that can be

PHP and regular expressions. A regular expression from a swords blog is a specific format that can be used to identify the usage of a string in another string. Several programming languages, including blogs from swords A regular expression is a

They all take a regular expression as their first argument, listed as follows: Ereg: The most commonly used regular expression function, Ereg allows us to search for a string that matches a regular expression. Ereg_replace: Allows us to search for

PHP code $STR = Preg_replace ("/() (. *?) ()/", ' \1\2\3", $str); The uses three sub modes (one in each parenthesis), the first one is the link start tag, the second is the link text, and the third is then \1, \2, and \3 in the second argument,

Take the mailbox verification, most people on the Internet write the mailbox validation regular expression code can not verify this mailbox: i@julying.com, nor can you verify xxxxxx@i.com . Last I found that youku.com (Youku) User registration has

Regular expressions for string processing, form verification, and other occasions, practical and efficient. This article collects some common expressions: $str = Preg_replace ("/( ) (. *?) ()/", ' \1\2\3 ', $str); It uses three sub

ArticleDirectory Feedback Post comment Learn how to write a regular expression: ---------------------------------------------------------------Http://geekswithblogs.net/brcraju/articles/235.aspxWhat regular expression? A regular

The following is about the small series for everyone to collect and organize the regular expression of PHP, the specific content please see below detailed $str = Preg_replace ("/() (. *?) ()/", ' \1\2\3 ', $str); It uses three sub

Basic knowledge CharacterPOSIX Extended Regular Expression functionsPerl-compatible Regular expression functionsFrom the message verification. The format of the message: Tenssun@163.com Where Tenssun is the user name, 163.com is the server name