Regular Expressions 101

Order By

Sponsors
There are currently no sponsors. Become a sponsor today!

Community Patterns

1

URL REGULAR EXPRESSION CHALLENGE

PCRE (PHP <7.3)
Follow the instructions to match/don't match the following urls. Then post to comminity with title: [URL CHALLENGE]:
Submitted by kostas trichas - 10 years ago
0

Challenge: Create regular expression that matches the following urls

PCRE (PHP <7.3)
Note the 2 lines separated urls. These should NOT match
Submitted by kostas trichas - 10 years ago
0

phone number (simple validate)

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 10 years ago
2

Regex Capture String

PCRE (PHP <7.3)
Capture out Parts using regular expressions
Submitted by Brandon - 10 years ago
1

DNS SOA

PCRE (PHP <7.3)
oneliner SOA record matching regexp. like "ns1.domain.com.ge. mail.ns1.domain.com.ge. (2014061613 3600 600 604800 1800 )" without @ IN SOA in begging, usefull when implementing something like DNS GUI.
Submitted by Nick Chkhikvishvili - 10 years ago
1

Double dollar delimited centred LaTeX equation

Python
Find all instances of a double dollar delimited centred LaTeX equation, for use with e.g. KaTeX
Submitted by drewsberry - 10 years ago
0

Single dollar delimited LaTeX equation

Python
Find single dollar delimited LaTeX equations, for use with e.g. KateX
Submitted by drewsberry - 10 years ago
1

Match date from calendar as string

PCRE (PHP <7.3)
Match date from calendar as string
Submitted by anonymous - 10 years ago
-2

1

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
18

Email validation

PCRE (PHP <7.3)
no description available
Submitted by tutsplus.com - 10 years ago
0

Match all html tags

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

Get all HTML tag names

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

Parse JSON key value

PCRE (PHP <7.3)
no description available
Submitted by Kostas Trichas - 10 years ago
0

Parse JSON key value pair

PCRE (PHP <7.3)
no description available
Submitted by Kostas Trichas - 10 years ago
0

url GET parameters

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

t

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
3

Get URL parameters

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

Extract url GET parameters

PCRE (PHP <7.3)
Returns key/value pair of a url. Also works with google fonts which has additional information
Submitted by anonymous - 10 years ago
1

Extract google fonts key, value, options

PCRE (PHP <7.3)
This regular expression is used to extract google font information from the embeded url
Submitted by anonymous - 10 years ago
2

parse images

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
1...878879880881882...901

Community Library Entry

2

Regular Expression
ECMAScript (JavaScript)

/
^(.?)(.?)(.?)(.?)(.?).?\5\4\3\2\1$
/
Open regex in editor

Description

Captures a palindrome of 9 digits or less

Submitted by anonymous - 8 years ago