Regular Expressions 101

Please wait while the app is loading...

Regular Expressions 101

@regex101 Donate Sponsor Contact Bug Reports & Feedback Wiki What's new?

Order By

Filter by Flavor

Sponsors

All your environment variables, in one place

Library entries

Search library

2

Remove multiple white spaces between words

Remove multiple white spaces between words and replace it with the char of your choosing.

Submitted by binary_fm - 7 years ago

2

URL extractor

Extract parts of an URL.

Submitted by Gilles Marchand - 7 years ago

2

RewriteMatch into subfolder

RegEx for an .htaccess rewrite into a subfolder without provoking a 'too many redirects' error

Submitted by Nils B. - 7 years ago

2

paramaterised sql like expressions for sybase

no description available

Submitted by robessog - 7 years ago

2

multiple sql like expressions

no description available

Submitted by robessog - 7 years ago

2

search for a regex excluding a word

^((?!proposed_).)*((project|task)_details) matches: project_details task_details...

Submitted by aymon - 7 years ago

2

Delete Blank Lines

no description available

Submitted by anonymous - 7 years ago

2

Matches human genomic coordinates

This expression matches human genomic coordinates, similat to those being used by genome browsers (e.g. the UCSC Genome Browser). It can match: chromosome, chromosome start, chromosome start end, chromosome start end reference sequence, chromosome start end reference sequence alternative sequence. T...

Submitted by Panagiotis Moulos - 7 years ago

2

Email combo to username combo

no description available

Submitted by anonymous - 7 years ago

2

negative lookahead

no description available

Submitted by anonymous - 7 years ago

2

URL MATCH

Submitted by activesatan - 7 years ago

2

Eircode

Eircode validation for new postcodes identifiers in Republic of Ireland. Case-insensetive for easier user input. Added optional space separator to follow same pattern as in UK post codes and in examples used in eircode spec.

Submitted by Arek Jaworski - 7 years ago

2

Match multiline comments /* ... */

It won't match single line comments like this one: //* This comment won't be match */ ^ see the double / Works in PHP without the g modifier.

Submitted by SimonaHalep - 7 years ago

2

php naming convension (classes, vars, functions, constants)

PHP Basic coding standard Naming Convension pattern: /^\pL_*$/

Submitted by Najmuddeen Mohammed - 6 years ago

2

domain for Google Data Studio (re2 dialect)

Matches subdomain, domain and top level in a field that contains a urls. https://www.whatever.you.want ---> whatever.you.want

Submitted by anonymous - 6 years ago

2

check name

no description available

Submitted by anonymous - 6 years ago

2

URL parser

The best way to parse URL via Regex. This can be used in javascript, PHP, etc.

Submitted by Ivijan-Stefan Stipic - 6 years ago

2

Matching Character Class Transitions (customization of \b)

\b can be replicated as (?<=\w)(?=\W)|(?<=\W)(?=\w) Understanding how to create these class transitions can be beneficial for several reasons. In this instance, counting the results of this regex can be used to measure randomness within strings containing multiple character classes.

Submitted by @notGeorgePBurdell - 5 years ago

2

NSU ID Card Checker

no description available

Submitted by anonymous - 5 years ago

2

Better version of UK postcode

This UK postcode regex will match all variants of postcode formats including inner London postcodes (eg SW1A), with optional space (both AL11XP and AL1 1XP are valid) It will reject any postcode that does not specify a valid postcode area. Each part of the postcode is also captured into a capture ...

Submitted by anonymous - 5 years ago

1...471 472 473 474 475 476 477...485