Regular Expressions 101

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Community Patterns

1

Email validation

PCRE (PHP <7.3)
because everything else is too strict
Submitted by anonymous - 10 years ago
-2

python bracketed text

Python
why doesn't this match text in brackets?
Submitted by anonymous - 10 years ago
1

Get Itunes ID

PCRE (PHP <7.3)
Get itunes id from url
Submitted by sendypw - 10 years ago
1

test

PCRE (PHP <7.3)
test
Submitted by anonymous - 10 years ago
1

test

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
1

Numer telefonu

PCRE (PHP <7.3)
no description available
Submitted by p.borecki - 10 years ago
1

hashtag and user tag regex

PCRE (PHP <7.3)
This regular expression can be used to find tags and hashtags in a string. It assumes that a username can contain both underscores and points (.) and that hashtags can only contain letters
Submitted by Luca Simonetti - 10 years ago
2

paren strip test

PCRE (PHP <7.3)
paren strip test
Submitted by marie bacuno - 10 years ago
1

SIP Address Validator

PCRE (PHP <7.3)
Validates SIP(Session Initiation Protocol) Addresses
Submitted by Tarun Telang - 10 years ago
0

HTML5 time entry regex

ECMAScript (JavaScript)
This regex can be used within a HTML5 input tag to ensure a time has been entered correctly such as 23:40 or 11:40 PM.
Submitted by Scott Mebberson - 10 years ago
1

Simple Date regex

ECMAScript (JavaScript)
With format dd/MM/yyyy
Submitted by Magador - 10 years ago
-3

Strict email validation

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 10 years ago
0

TCP/UDP port number

PCRE (PHP <7.3)
validates TCP/UDP port number (1..65535)
Submitted by sanchox - 10 years ago
0

Multiple matches in php but only one in javascript

ECMAScript (JavaScript)
I have used this regexp succesfully in php with flags gmU and have multiple matches. In js there is no U flag and this only returns last match. Is there anything I can do to make this work similarly in javascript?
Submitted by yorogs - 10 years ago
1

PCI Device

Python
no description available
Submitted by anonymous - 10 years ago
2

YouTube Embed Video & Playlist from URL

ECMAScript (JavaScript)
It gets the playlistID and the videoID to conform the embed URL from the video URL
Submitted by @rubenlopezgea - 10 years ago
1

NSE0(.*)\nNSE1\s+(.*)\nNSE2\s(.*)\nNSE3\s+(.*)kbps.*\nNSE4\s+(.*)\nNSE

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 10 years ago
1

Validate URLs

PCRE (PHP <7.3)
Someone on IRC posted the following site: https://mathiasbynens.be/demo/url-regex which challgenged me to write a decent regex to match valid URLs in that list. This regex works in both pcre and javascript (you'll have to replace the pcre-specific syntax to make it work in JS). Don't actually use t...
Submitted by Firas Dib - 10 years ago
-1

Split address line into street name and house number

PCRE (PHP <7.3)
This regular expression splits an address line like for example "1117 Franklin Blvd" into the street name and house number. It also supports addresses where street name and house number are the other way around (e.g. "Mustermannstr. 1"). Furthermore, this regular expression also supports address li...
Submitted by Andre Wisplinghoff - 10 years ago
1

ISO-8601 date parse

ECMAScript (JavaScript)
Works with 2015-04-03T13:56:24.0+00:00 (official) format, and 2015-04-03T13:56:24+0000 (PHP) format, too
Submitted by Norbi - 10 years ago
1...4344454647...901

Community Library Entry

1

Regular Expression
PCRE (PHP <7.3)

`
(?(DEFINE) (?<PROTOCOL>[^:/#?\s]+://) (?<LOGIN>[^:@/#?\s]+(?::[^@/#?\s]+)?@) (?<TEXT_DOMAIN>[^./#?\s-:]+(?:-[^./#?\s-:]+)?\.) (?<IP_DOMAIN> (?&NOT_RESERVED_IP) (?: (?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\. ){3} (?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?) ) (?<NOT_RESERVED_IP> (?!(?:1?0|224)(?:\.\d{1,3}){3}| (?:192\.168|172\.16)(?:\.\d{1,3}){2} ) ) (?<TLD>[^/#?\s.\d:-]+) (?<PORT>:\d{1,4}) (?<PATH>/(?:[^/\s&#?]*/?)+) (?<QUERY> \? (?: [^\s=]+(?:=[^&\s]*)? (?:&[^\s=]+(?:=[^&\s]*)?)* )? ) (?<HASH>\#.*) ) ^ (?&PROTOCOL) (?&LOGIN)? (?:(?&TEXT_DOMAIN)+(?&TLD)|(?&IP_DOMAIN)) (?&PORT)? (?&PATH)? (?&QUERY)? (?&HASH)? $
`
gmx
Open regex in editor

Description

Someone on IRC posted the following site: https://mathiasbynens.be/demo/url-regex which challgenged me to write a decent regex to match valid URLs in that list. This regex works in both pcre and javascript (you'll have to replace the pcre-specific syntax to make it work in JS).

Don't actually use this though, validate your URLs in a sane manner instead.

Submitted by Firas Dib - 10 years ago