Regular Expressions 101

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Community Patterns

1

Deucesanother

PCRE (PHP <7.3)
Fixwithpecra
Submitted by Deuces9ers - 2 months ago
1

Text in between HTML tags and inside quotation marks within HTML tags

ECMAScript (JavaScript)
Overview This Regular Expression shows any text between HTML tags or between quotation marks within the tags themselves. An example would be: <HTML lang="en", then selecting the 'en' from there. Group 1 is between tags, and group 2 is in the quotes. I recommend only using half of this regular expres...
Submitted by daniel@sabian.pro - a month ago
1

test

PCRE2 (PHP >=7.3)
test
Submitted by anonymous - a month ago
1

DoubleQuote Enclosed CSV Field with Escaped DoubleQuote

PCRE2 (PHP >=7.3)
Extract field value of DoubleQuote Enclosed CSV Field with Escaped DoubleQuote The matching field value still contains escaped double quotes to be later processed :-)
Submitted by Alper YAZGAN - a month ago
1

Asw

PCRE (PHP <7.3)
``/^(?P0|1-9]\d)\.(?P0|[1-9]\d)\.(?P0|[1-9]\d)(?:-(?P(?:0|[1-9]\d|\d[a-zA-Z-)(?:\.(?:0|1-9]\d|\d[a-zA-Z-))))?(?:\+(?P[0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$/gmsAD
Submitted by anonymous - a month ago
1

Changes Log Tag verify for Languages Code sub-versioning

PCRE2 (PHP >=7.3)
Search for the occurence of the 3 following words: CHA, LOG and TAG. Should be in the above order sequence (but it also if works swapped).
Submitted by XrosaXasorX - a month ago
1

Telephone validation regex - handles international codes, extensions, and formatting gracefully

PCRE2 (PHP >=7.3)
Search string for use in contact cleaning project $1 = intenational code, omitting preceding "+" $2 = area code $3 = first three digits of phone number $4 = last four digits of phone $5 = extension, inclusive of any commas or hashes to automate phone tree navigation...
Submitted by Jason - a month ago
1

AoC 2025 Day 5

Python
AoC 2025 Day 5 part 1 but also works for part 2. You just don't need the IDs at the bottom for part 2
Submitted by anonymous - a month ago
1

U.S. Phone Number

PCRE2 (PHP >=7.3)
Format validation for U.S. phone numbers with or without a country code and with various formatting and punctuation permissible.
Submitted by Nick - a month ago
1

1

Python
554
Submitted by anonymous - a month ago
1

Strings

PCRE2 (PHP >=7.3)
Extracting strings defined in languages like C/C++ etc.
Submitted by Insoft - 24 days ago (Last modified 24 days ago)
1

HP Prime

PCRE2 (PHP >=7.3)
Extracts HP Prime PPL numbers.
Submitted by anonymous - 24 days ago (Last modified 23 days ago)
1

Simple CSS Selector parser

ECMAScript (JavaScript)
Basic Regex for CSS Selector. Pseudo-Elements, Combinators and other advanced stuff are not supported.
Submitted by anonymous - 22 days ago (Last modified 22 days ago)
1

Caculator seperator with groups

PCRE2 (PHP >=7.3)
Caculator seperator with groups
Submitted by CalcMan - 14 days ago
1

cApStAn OmegaT custom tags

Java 8
Custom tags expression used in cApStAn's build of OmegaT
Submitted by msoutopico - 11 days ago
1

cApStAn OmegaT flagged / disallowed text

Java 8
Flagged / disallowed text expression used in cApStAn's build of OmegaT
Submitted by msoutopico - 11 days ago
1

Match Bible References

PCRE2 (PHP >=7.3)
I've created this for a simple project of mine, it squishes every book of the Bible into a RegEx, with the full name, abbreviation, and abbreviation with a dot. Then, it matches the chapter and verse relatively simply.
Submitted by Twineee - 10 days ago
1

Discord URL matching

PCRE2 (PHP >=7.3)
match every type of discord url with each useful part in a group pretty optimized, shouldnt be too harsh on your system should work in every flavor except rust because rust sucks lol
Submitted by User9684 - 9 days ago (Last modified 9 days ago)
1

Match instagram URLs

PCRE2 (PHP >=7.3)
Matches instagram urls for posts, reels, and stories works on all flavors except rust
Submitted by User9684 - 9 days ago
1

ตรวจสอบวรรณยุกต์และสระในภาษาไทย

ECMAScript (JavaScript)
ใช้ตรวจสอบวรรณยุกต์และสระในภาษาไทย ไม่ตรวจสอบพยัญชนะต้นและตัวสะกด
Submitted by อธิปัตย์ ล้อวงศ์งาม - 7 days ago (Last modified a day ago)
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