What Is Regular Expression In Php

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PHP matches URL Regular expression code

PHP Tutorials Match URL Regular expression code//This is a PHP regular expression that gets all the links in the article content $str = ""; $reg = "<a[ss]*?" (href) s*=s* (? =["']) ((["]) (? <href>[^ "']*) 2) | (? <src>[^s>]+)) [ss]*?> "...

PHP Regular expression basic function modifier metacharacters character and need escape word

The characters you need to escape in the PHP tutorial regular expressions are as follows: $^* () +={}[]|/:<>. "Note: Perl style expressions require/start and end, such as:/food/table matching characters Food Perl modifiers are as follows: I complete a case-insensitive search G Find all occurrences (all occurrences, complete global search) m treats a string as multiline (m means multiple (listbox)). By default, ^ and $ ...

php extract article content image address regular expression

<! doctype html public "- // w3c // dtd xhtml 1.0 transitional // en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd"> <html xmlns = "http : //www.w3.org/1999/xhtml ...

PHP operation MySQL 3rd pass the third day

In this lesson, we want to learn how to increase the intelligent processing capacity of the Web page. Basic functions Welcome to the third and final lesson of this tutorial. If you've learned the first and second lessons, you've mastered the basics of installing and programming MySQL and PHP. Here are some of the other functions of PHP that might be useful to you and make your development process simpler.   First, let's look at the document. You should know some basic concepts of the header file, right? The header file is an external file whose contents are included in the main program. ...

PHP Regular expression get title keyword and content code

Collection in the current CMS are often used to Oh, let's take a look at the PHP regular expression of title, keyword, content code OH.   Gets the title $inarr = Array ();   Preg_match ("/<title> (. *) </title>/isu", $body, $inarr); if (Isse ...

Regular expression function library: Split

Split (PHP3, PHP4) split---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; To cut a string in a regular expression syntax: Array split (string pattern, string string [, int limit]) Description: Returns an array of strings, in regular expression p ...

Regular Expression function library: Sql_regcase

Sql_regcase (PHP3, PHP4) sql_regcase---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; To make a regular expression case-insensitive syntax: String sql_regcase (String string) Description: Returns a valid regular expression against string, ignoring case ...

php regular specified string content preg_match function description

php tutorial Regularly specify the string content Preg_match function description Although the code is small, but the code is as follows: preg_match ('/ ^ (?! string) /', 'aa') === true This is used to verify a Whether a string begins with a 'string' or not, in a perl or perl-supported regular expression language such as php, can be done with a look-ahead declaration, as the regular expression is: preg_mat. ..

Php verify cell phone number and phone number is regular

Php tutorial to verify the phone number and phone number is about to talk about the regular use of php to verify the user input phone number is consistent with China Telecom phone number rules, whether the phone number for China Mobile or China Unicom's mobile phone number. * / function funcphone ($ str) // phone number regular expression try {return (preg_match ("/ ^ (((d {3})) | (d {3} -))? ) | 0d {2,3} -)? ...

php regular link Chinese program

php tutorial Regularly connected to the Chinese version of the program This paragraph program is to take out all the text in a title, the use of PHP's regular expression function to examples. $ htm = "<a href='http://www.jzread.com'> test1 </a> <br />". & n ...

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