Regular Expressions 101

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Community Patterns

5

Codice fiscale italiano

PCRE (PHP <7.3)
Oltre a supportare le omocodie controlla in modo restrittivo il carattere relativo al mese di nascita
Submitted by Aldo Medri - 9 years ago
5

look for any $_POST['name']

PCRE (PHP <7.3)
if you are as lazy as me and want to replace every "=$_POST['name'];" using Dreamweaver or any development tool that allows using regular expressions to search in current file/document.
Submitted by Kevinator - 9 years ago
5

get specific value from html tag

PCRE (PHP <7.3)
no description available
Submitted by A.ROA - 8 years ago
13

Match Gmail Email

Recommended
PCRE (PHP <7.3)
Match Gmail Email
Submitted by Óscar Enríquez - 10 years ago
11

remove comments from php code

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
10

MikroTik FireWall

PCRE (PHP <7.3)
Regex used in Splunk to extract fields from Mikrotik FW. NOTES: Mikrotik must be configured to use "BSD Syslog" format FW rules must add, as log prefix, the action: drop accep...
Submitted by HappyIdeasMaker - 9 years ago
236

Matching email addresses per RFC5322

PCRE (PHP <7.3)
The BNF rules from RFC 5322 transformed to PCRE by Nikita Popov and described in the post http://nikic.github.io/2012/06/15/The-true-power-of-regular-expressions.html.
Submitted by Michael Musson - 11 years ago
483

regex101.com permalink id grabber

PCRE (PHP <7.3)
Grabs the ID for the regex101.com permalink code. If a revision number is provided, grab that as well.
Submitted by chris mccoy - 11 years ago (Last modified 5 months ago)
9

Fixo LDN CSP e SEM CSP

PCRE (PHP <7.3)
no description available
Submitted by Marcos Müller - 10 years ago
11

IPv4 Validator

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 4 years ago (Last modified a year ago)
9

Fiddler raw body to PHP array

PCRE (PHP <7.3)
no description available
Submitted by garsax - 9 years ago
14

RFC3339 DateTime

Recommended
PCRE (PHP <7.3)
Validates a RFC3339 DateTime format. Does not validates the Data
Submitted by anonymous - 9 years ago
10

Conventional Commits validation

PCRE (PHP <7.3)
This regex prevents the writing of non-standard conventional commits. I'm available on my github
Submitted by Krisque - 3 years ago (Last modified a year ago)
27

Parsing browser User Agents

PCRE (PHP <7.3)
From a (fairly large) list of User Agent strings, extract the OS, Browser, and Device Type.
Submitted by OnlineCop - 10 years ago (Last modified a year ago)
29

Cron schedule

Recommended
PCRE (PHP <7.3)
Validate cron lines (even the ones commented out)
Submitted by anonymous - 8 years ago
17

best youtube id match ( iframe embed replace ready )

Recommended
PCRE (PHP <7.3)
MATCH ANY YOUTUBE ID author : mi-ca v1.0 – 2017.03.08 This Regex match any youtube url and grab the ID. Embed ready √ --...
Submitted by mi-ca.ch - 5 years ago
1...459460461

1 lower 1 upper 1 special char, 8 to 18 chars...

1

Regular Expression
PCRE2 (PHP >=7.3)

/
^(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[-\@\#\$\.\%\&\*\!\+\_\=\?\'\{\}\(\)\/])([a-zA-Z0-9-\@\#\$\.\%\&\*\!\+\_\=\?\'\{\}\(\)\/]{8,16})$
/
gm
Open regex in editor

Description

1 lower 1 upper 1 special char, 8 to 18 chars...

Submitted by anonymous - a month ago