Regular Expressions 101

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Community Patterns

0

filestore directory

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
0

filestore filename

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
0

Enclose <div> tag with <p> tag when inside <p> tag

PCRE (PHP <7.3)
Change the tags only when they are within a tag.
Submitted by LukStorms - 8 years ago
0

version tag

PCRE (PHP <7.3)
Verify if the given text is a version tag, like git tags for versions in the git flow method
Submitted by bruno-delfino1995 - 8 years ago
0

Get shortcode

PCRE (PHP <7.3)
Get shortcode
Submitted by khiconit - 8 years ago
0

filename and extension

PCRE (PHP <7.3)
no description available
Submitted by 4B1D F4DL14N N - 8 years ago
0

po box extracter

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 8 years ago
0

Check not minified file

PCRE (PHP <7.3)
This regex will match only filenames not containing the ".min" marker
Submitted by anonymous - 8 years ago
0

UK phone numbers

PCRE (PHP <7.3)
Source: http://stackoverflow.com/questions/36777840/how-to-validate-phone-number-in-laravel-5-2 Thanks to: Nady Shalaby
Submitted by Nady Shalaby - 8 years ago
0

Facebook embedded video

Python
no description available
Submitted by anonymous - 8 years ago
0

Duplicate word match

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
0

Find comments block in the source code.

ECMAScript (JavaScript)
This pattern finds comments block in the source code.
Submitted by giraysam - 8 years ago
0

P1 registers

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
0

regex for finding url

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
0

Test

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
0

Divide URL

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 8 years ago
0

URL query param

Python
A solution for capture set/unset/catch a value of param query of URLs. Here is a example code that applies this pattern in JS, but JS doesn't have support to lookbehind.
Submitted by Rafael Laurindo - 8 years ago
0

redirections catégorie ordinateur-portable

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
0

A complete recognition of HTML elements pattern.

ECMAScript (JavaScript)
no description available
Submitted by Rafael Laurindo - 8 years ago
0

A complete recognition of pattern for css selectors

ECMAScript (JavaScript)
no description available
Submitted by Rafael Laurindo - 8 years ago
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Community Library Entry

1

Regular Expression
PCRE2 (PHP >=7.3)

/
^ # Uncomment to allow prefix continuation (second letter of a dangling match) # ([abcdefghiklmnoprstuvy\ ])? ( \ |(?: # Single-letter elements [BCFHIKNOPSUVWY] ) |(?: # Two-letter elements. (?:A[cglmrstu])|(?:B[aehikr])|(?:C[adeflmnorsu])|(?:D[bsy]) | (?:E[rsu])|(?:F[elmr])|(?:G[ade])|(?:H[efgos])|(?:I[nr]) | (?:K[r])|(?:L[airuv])|(?:M[cdgnot])|(?:N[abdehiop]) | (?:O[gs])|(?:P[abdmortu])|(?:R[abefghnu])|(?:S[bcegimnr]) | (?:T[abcehilms])|(?:X[e])|(?:Yb)|(?:Z[nr]) ) |(?: # Smushed trigrams. No need to go past trigrams because two twos make four (?:A(?:ga|gd|ge|la|lr|md|mg|mt|ra|re|rg|ta|te|tl|tm)) |(?:E(?:ra|re|rg)) |(?:G(?:ag|al|am|ar|at|er)) |(?:L(?:ag|al|am|ar|at|ra|re|rg)) |(?:M(?:ga|gd|ge|ta|te|tl|tm)) |(?:R(?:ag|al|am|ar|at|er|ga|gd|ge)) |(?:T(?:ag|al|am|ar|at|er|la|lr|md|mg|mt)) |(?:X(?:er)) |(?:Z(?:ra|re|rg)) ) # repeated any number of times )+ # Uncomment to allow last letter if it's a potential first letter of the next word # ([ADEGLMRTXZ]\ *)? $
/
gimx
Open regex in editor

Description

This will match only words that include chemical elements: H + Og + W + Ar + Ts but not Eton. It allows internal overlap: LaG = La + Ag, and allows the first letter or last letter to be the end/start of a symbol to allow chaining. You can easily remove the various pieces, though. A single-line (non-"extended") regex is at the bottom of the test string

Submitted by mrflip - 21 days ago (Last modified 21 days ago)