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Introduction to regular expressions (#2): ERE POSIX

in PHP added by goodphptutorials, on 3/12/2005 beginner tutorials posix regex regular expressions

This tutorial will assume you have already read '(#1): General Mechanics', and are merely wanting to continue your research into POSIX.

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Introduction to regular expressions (#1): General Mechanics

in PHP added by goodphptutorials, on 3/12/2005 beginner tutorials regex regular expressions

Regular expressions were created by an American mathematician named Stephen Kleene

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PHP Regex Cheat Sheet (PDF)

in PHP added by goodphptutorials, on 27/12/2005 expressions general patterns pcre php regex

A handy guide of all the useful regex characters, metacharacters, quantifiers and pattern modifiers to make creating regex expressions easier.

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Simplify e-mail validation routines with PHP

in PHP added by goodphptutorials, on 29/10/2007 email general regex regular expression verification

A very common task when building Web sites involves validating user-supplied e-mail addresses. In this article we'll show you how to use the powerful regular expression engine built into PHP.

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Input Validation: Using filter_var() Over Regular Expressions

in PHP added by Mojah, on 8/2/2009 advanced tutorials filter_var php5 regex

The biggest time-sink on any project, is the amount of input validation that needs to be done. You _have_ to assume your visitor is a maniac serial killer, out to destroy your application. And you have to prevent it.

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15 PHP regular expressions for web developers

in PHP added by goodphptutorials, on 28/7/2009 beginner tutorials regex

Regular expressions are a very useful tool for developers. They allow to find, identify or replace text, words or any kind of characters. In this article, I have compiled 15+ extremely useful regular expressions that any web developer should have in his toolkit.

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