Regular expression topic

A regular expression (shortened as regex or regexp), sometimes referred to as rational expression, is a sequence of characters that specifies a match pattern in text. Usually such patterns are used by string-searching algorithms for “find” or “find and replace” operations on strings, or for input validation.

Regular expression techniques are developed in theoretical computer science and formal language theory. They are used in search engines, in search and replace dialogs of word processors and text editors, in text processing utilities such as sed and AWK, and in lexical analysis. Regular expressions are also supported in many programming languages.

Different syntaxes for writing regular expressions have existed since the 1980s, one being the POSIX standard and another, widely used, being the Perl syntax.

List Regular expression repositories

cyberchef-recipes

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A list of cyber-chef recipes and curated links

learn-regex

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Learn regex the easy way

micromatch

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Highly optimized wildcard and glob matching library. Faster, drop-in replacement to minimatch and multimatch. Used by square, webpack, babel core, yarn, jest, ract-native, taro, bulma, browser-sync, s...

regex

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A sane interface for php's built in preg_* functions

lexmachine

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Lex machinary for go.

git-hound

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Git plugin that prevents sensitive data from being committed.

PHPVerbalExpressions

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PHP Regular expressions made easy

randexp.js

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Create random strings that match a given regular expression.

cheat-sheet-pdf

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📜 A Cheat-Sheet Collection from the WWW