Regular Expressions 101

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Community Patterns

1

Parse URLs

Python
A regular expression to parse URLs. Complete with comments.
Submitted by D. Torres - 3 years ago
1

Currency amount validation with sign (cents optional)

ECMAScript (JavaScript)
Allows Number: Currency amount US (cents optional) Can use US-style 123,456.78 notation Optional thousands separators; optional two-digit fraction; commas; dollar sign
Submitted by NatZol - 3 years ago
1

1

ECMAScript (JavaScript)
1
Submitted by anonymous - 3 years ago
1

Match anything under $15.99

PCRE2 (PHP >=7.3)
^\-?\$0-1+(\.[0-9]{2,2})?$|^\-?\$[0-5]+(\.[0-9]{2,2})?$
Submitted by https://square.to - 3 years ago
1

Remove HTML tags and comments

Python
Remove HTML tags and comments
Submitted by Smit Patel - 3 years ago
1

Password stronger

PCRE2 (PHP >=7.3)
This regex will validate your password To be stronger, the password must be contain: At least 8 characters At least 1 number...
Submitted by Rafael Paciência - 3 years ago
1

Splunk log regex

PCRE2 (PHP >=7.3)
regex to parse space separated log message from splunk test string ugi=flink ip=172.18.214.55 cmd=source:172.18.214.55 alter_table: hive.net_seed.netdebugnetworkconnectionstatereadysnapshotcapturedevent newtbl=netdebugnetworkconnectionstatereadysnapshotcapturedevent ugi=root ip=172.19.212.146 cmd=s...
Submitted by Steve Zhang - 3 years ago
1

Parse Kubernetes Resource URI Paths

Golang
This regex extracts Kubernetes Resource URIs. Copyright 2021 Mathew Wicks Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License....
Submitted by Mathew Wicks - 3 years ago
1

Monkaa Dataset

Python
Parses Monkaa dataset filenames and extracts all the relevant labels
Submitted by IP - 3 years ago
1

Split Base64

PCRE2 (PHP >=7.3)
-
Submitted by anonymous - 3 years ago
1

Inverse Brainfuck Regex

PCRE2 (PHP >=7.3)
Regex to select everything except brainfuck symbols.
Submitted by rex0515 - 3 years ago
1

Brainfuck Regex

PCRE2 (PHP >=7.3)
Regex to select every brainfuck symbol.
Submitted by rex0515 - 3 years ago
1

Parser for GPG search-key output

PCRE2 (PHP >=7.3)
Record the output of the batch gpg --search-keys commands into variables. For example, get the public key ids or those with *.amazon.com email addresses: pubkeyids=$(gpg --batch --keyserver hkp://keyserver.ubuntu.com --search-keys amazon.com 2>&1 | grep -Po '\d+\sbit\s\S+\skey\s+' | cut -d' ' -...
Submitted by mavaddat - 3 years ago
1

SML Structure

PCRE2 (PHP >=7.3)
This i suggest match the sml structure. Use it wisely, I made it just for fun!
Submitted by Shoaiyb Sysa - 3 years ago (Last modified 3 years ago)
1

Github URI Validator

PCRE2 (PHP >=7.3)
Validate Github URI
Submitted by Shoaiyb Sysa - 3 years ago (Last modified 3 years ago)
1

Web wikilinks

PCRE2 (PHP >=7.3)
[[plain wikilinks]] [[first tag]] [[meta on first tag]] [[first tag + meta + container]] [[first tag + meta + container + third tag]] [[forgot a bracket...
Submitted by Evan Boehs - 3 years ago
1

match INTEGER val in range [0 ,32767] for unsigned val and [-32768,-1] for signed val

Python
"(^-?)(3276[0-8]$|327[0-5]?[0-9]$|320-6?[0-9]$|3[0-1]?[0-9]?[0-9]?[0-9]$|[0-2]?[0-9]?[0-9]?[0-9]?[0-9]$)"gm
Submitted by issam-seghir - 3 years ago (Last modified 3 years ago)
1

Extract everything between TD brackets

PCRE (PHP <7.3)
This is used to extract everything between TD brackets.
Submitted by <a href="https://www.dug.to">Regex101</a> - 3 years ago
1

Screencast.com video url regex

PCRE (PHP <7.3)
Screencast.com video url regex
Submitted by anonymous - 3 years ago
1

Track1 credit card dump

ECMAScript (JavaScript)
Captures group that is either AMEX, MC, or Visa with or without start and end sentinels including discretionary data after section for name Does not support 13 digit credit cards, as they are not used anymore. Only allows for 15 digit AMEX and 16 digit Visa or MC
Submitted by BigDad - 3 years ago
1...266267268269270...902

Community Library Entry

1

Regular Expression
ECMAScript (JavaScript)

/
^rgba?\((?:\s+)?(?<r>\d+(?<unit>%?))(?:\s+)?(?<separator>[\s|,])(?:\s+)?(?<g>\d+\k<unit>)(?:\s+)?\k<separator>(?:\s+)?(?<b>\d+\k<unit>)(?:\s+)?(?:(?<=(?:,.+))(?:,(?:\s+)?(?<a>(?:\d+)?(?:\.?\d+)))?(?:\s+)?)?\)$
/
gm
Open regex in editor

Description

Pattern for matching actually valid RGB values.

  • validate separator (mixing spaces and commas between values is not valid)
  • validate if comma is used as separator if alpha channel is set
  • validate units (mixing percentage with integers is not valid)
  • extract r, g, b, a, separator and unit with named groups
Submitted by BorisTB - 3 years ago (Last modified 3 years ago)