Regular Expressions 101

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Community Patterns

1

Match the distinct letters used in a string

PCRE2 (PHP >=7.3)
This finds a letter and omits all other instances of that letter, leaving you only the distinct letters used in the string.
Submitted by Ember B - a year ago
1

Get submodule paths from `git submodule status` output

PCRE2 (PHP >=7.3)
Useful for automation of making submodule paths as trusted folders for git.
Submitted by Vadim Reutskii - a year ago
1

DATE FORMAT REGEX ALL COMBINAISIONS

PCRE2 (PHP >=7.3)
For the day: d Displays the day as a number without a leading zero (1-31). dd Displays the day as a number with a leading zero (01-31). ddd Displays the day as an abbreviation (Sun-Sat) dddd Displays the day as a full name (Sunday-Saturday) ...
Submitted by EYA GHACHEM - a year ago
1

FORMAT DATE WITH NO SEPARATOR

PCRE2 (PHP >=7.3)
For the day: d Displays the day as a number without a leading zero (1-31). dd Displays the day as a number with a leading zero (01-31). ddd Displays the day as an abbreviation (Sun-Sat) dddd Displays the day as a full name (Sunday-Saturday) ...
Submitted by EYA GHACHEM - a year ago
1

EU VAT numbers

PCRE2 (PHP >=7.3)
Based on this expression and updated Oct 2023 using wikipedia
Submitted by Henk-Jan @ Cargoplot - a year ago
1

CFF-definitions.reference.PMCID (1.3.0)

PCRE2 (PHP >=7.3)
Pattern for validating a definitions.reference.pmcid value in the Citation File Format (CFF), v1.3.0
Submitted by stephan druskat, jurriaan h. spaaks - a year ago
1

Validate email address (unicode)

ECMAScript (JavaScript)
Validate unicode email addresses
Submitted by anonymous - a year ago (Last modified 5 months ago)
1

Validate and split street and house number (trailing house number)

ECMAScript (JavaScript)
Validate and split street address (street and house number) with trailing house number
Submitted by anonymous - a year ago (Last modified a year ago)
1

Validate and split street and house number (leading house number)

ECMAScript (JavaScript)
Validate and split street address (street and house number) with leading house number
Submitted by anonymous - a year ago
1

INI Parser

PCRE2 (PHP >=7.3)
comments section key = value key = ltrim
Submitted by foul11, raxdiam - a year ago
1

Get number user format

PCRE2 (PHP >=7.3)
Get number user format
Submitted by blurzoom - a year ago (Last modified a year ago)
1

12px

PCRE2 (PHP >=7.3)
查找替换
Submitted by anonymous - a year ago
1

nomor telp lokal wakanda

ECMAScript (JavaScript)
indonesian telephone number
Submitted by aku dewe - a year ago
1

testregexaa

PCRE2 (PHP >=7.3)
aaa
Submitted by aaa - a year ago
1

ipv4 and ipv6 with mask in CIDR

PCRE2 (PHP >=7.3)
Match and validate both ipv4, ipv6 and CIDR notation mask!
Submitted by Stefanos Mitropoulos - a year ago
1

Repeat character with custom symbol

PCRE2 (PHP >=7.3)
OK
Submitted by UVT - a year ago
1

Group tags and lyrics

Python
Group tags and lyrics in one lrc file, multiple lines
Submitted by Cricar - a year ago
1

Match each tag

Python
Match each tag in a lrc file
Submitted by Cricar - a year ago
1

Extract tag name and its content

Python
Lrc file
Submitted by Cricar - a year ago
1

Workaround for IIS rewrite rule redirects with urls

PCRE2 (PHP >=7.3)
Make sure http[s]:// uses two slashes, not one. IIS rewrite rules removes double slashes in the raw URL, breaking YOURLS (PHP) for example. This regexp changes all single slashes to double after a web protocol, including nested querystrings.
Submitted by DeveloperDog - a year ago (Last modified a year ago)
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Community Library Entry

1

Regular Expression
Python

r"
(?P<street>\d+\s.*?(?:,\s*\w*\s*\d+)*),\s*(?P<city>.*?),\s*(?P<state>[A-Za-z]+)\s*(?P<zip>\d+)?,*
"
gm
Open regex in editor

Description

Complex address component capturing regex

Submitted by anonymous - 4 years ago