gnu regular expression tutorial

filter the properties of all HTML tags: Copy the Code code as follows: $search = Array ("' Si",//Remove JavaScript"' "' ([\ r \ n]) [\s]+ '",//Remove whitespace characters"' (quot| #34); ' I ",//Replace HTML entity"' (amp| #38); ' I ","' (lt| #60); ' I ","' (gt| #62); ' I ","' (nbsp| #160); ' I); Run as PHP code$replace = Array ("", "", "\\1", "\" "," "," $html = Preg_replace ($search, $replace, $html); The above describes the PHP regular

for Apache Friends Try to match the regular expression, but the learning is not fine, always can not correctly get the relationship between the subordinate, carefully ask? Reply content: 1. How to correctly match Google Chrome, Firefox exported bookmarks backup file (HTML format), correctly read the category directory and bookmark the subordinate relationship? 2. Export the Backup bookmark format

MySQL tutorial regular expression queries and instances^ Start part of matching string$ match End of string$sql = "Select ' Fonfo ' REGEXP ' ^fo$ ' from String_find";. Match any character (including carriage return and new line)$sql = "Select ' Fofo ' REGEXP ' ^f.*$ ' from String_find";A * matches any sequence of 0 or more a characters$sql = "Select ' Ban ' REGEX

: This article mainly introduces the regular expression PHP match and match_all. if you are interested in the PHP Tutorial, refer to it. Preg_match ($ pattern, $ subject, [array match]) preg_match_all ($ pattern, $ subject, array matches)Preg match only matches once. the returned value is 0 or 1;Preg match all matches multiple times and returns the number of

AsProgramRegular Expressions are usually used. Although it is not difficult to write, debugging is still very troublesome! Today, I accidentally found a regular expression test tool, and I also for the test Regular Expression of friends can look at, it is worth a try: http://www.unibetter.com/deerchao/downloads/RegexTe

PHP Tutorial User name Regular expression (Chinese, English, digit, letter)Consists of a letter a~z (case-insensitive), a numeric 0~9, a minus sign, or an underscoreYou can only start and end a number or letter with a 4~18 character length ^[a-za-z0-9]{1}[a-za-z0-9|-|_]{2-16}[a-za-z0-9]{1}$ The user name is uppercase or lowercase letters or underscores and b

As mentioned earlier, email verification can be processed by js first, and then by asp and php. Let's take a look at a new example of asp mail address verification regular expression. Just nowEmail VerificationYou can use js for processing first, and then use the asp tutorial and php tutorial. Let's take a look at a ne

Ec (2); I used the ereg function in the php tutorial to verify the email address, user name, and url address instance. Split the url lt ;? $ Url quot; www.111cn.net quot; $ www_urlereg ( quot; ^ (www ). ([[: alnum:] + ). ([[: alnum:] +) quot;, $ url, $ regs); if ($ script ec (2); script We used the ereg function in the php tutorial to verify the email address, user name, and url address instance. Spli

Two cell phone number verification codes are added to the favorites. First, the front-end uses jquery to verify the validity of the mobile phone number with the background php tutorial code.I use jquery. validate. js as the front-end Code. The Code is as follows: JavaScript code This is just an inaccurate verification, and it can only be roughly verified to a specific range, so the focus is still on the future. PHP code $ Mobilephone = trim ($

New users seek advice ~ Why do I feel useless about the regular expression pattern modifier e? For example, the two pieces of code match the URL link in the string. This uses the pattern modifier e: $ urlPattern nbsp; (www. | https? : | Ftp: | news: | telnet :) {1} ([^ [] + ?) (Com | net | org) ([w-. newbie tutorial ~ Why do I feel useless about the

In the past with Dede collection, always filter not off more than one line of code, only a row of filtering, on the Internet, found there are many and I like the rookie. With the constant use of Dede acquisition, there is a further understanding of the regular, and now I use a regular expression, the same can match multiple lines of code. For example, in the foll