Regular Expressions 101

Please wait while the app is loading...

Regular Expressions 101

@regex101DonateSponsorContactBug Reports & FeedbackWikiWhat's new?

Order By

Sponsors

Library entries

0
pcre

Match Linux File basename and pathname

Matches 2 groups - pathname and file basename, and will exclude anything on the end of the line that is not properly escaped.
Submitted by Steve Sant - 8 years ago
11
pcre

Remove Special Ascii Characters from unicode String

By Using this string you can just remove ascii special characters from a unicode string characters like ♥♥♥♥ ▓▒ and other non unicode letters.
Submitted by Hummad Hassan - 8 years ago
2
pcre

Select all chars before last backslash

For selecting paths without filename
Submitted by Me! - 8 years ago
1
pcre

Search for Qualifications

This will identify M.D.'s and D.O.s, regardless of punctuation (within reason) and exclude similar matches (e.g., DMD)
Submitted by anonymous - 8 years ago
0
pcre

YouTube VideoID and ListID from URL

For embeding, replace with //www.youtube.com/embed/$3?list=$2$6
Submitted by @rubenlopezgea - 8 years ago
1
pcre

Indonesia Post Code

no description available
Submitted by respeto - 8 years ago
1
pcre

border syntax checker

Checks the css value for a border
Submitted by Benjamin Weigt - 8 years ago
1
pcre

lisp

match function names in defun constructs
Submitted by anonymous - 8 years ago
5
pcre

parsing CSV file

It correctly handles simple values, empty values, and quoted values with commas inside.
Submitted by Viktor Lova aka nsinreal - 8 years ago
1
pcre

Nome articolo

Matcha il nome di un articolo (primo carattere, almeno 2 numeri=
Submitted by DD - 8 years ago
1
pcre

image.ext check

regexp for match images extension (png,jpg,jpeg,gif)
Submitted by dummy - 8 years ago
1
pcre

matching value of html src attribute

matching value of html src attribute
Submitted by junkuos - 8 years ago
1
pcre

Log entry Regex

no description available
Submitted by KP - 8 years ago
1
pcre

daily 204

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

webui

webui test
Submitted by Stelsy - 8 years ago
1
pcre

How to document a Regex? Example 2

How to document a Regex? Example 2: added documentation using (?#)
Submitted by Thomas - 8 years ago
1
pcre

How to document a regex? Example 1

How to document a regex? Example 1: undocumented Regex which works with my test string
Submitted by Thomas - 8 years ago
1
pcre

Credit Card finder

Captures credit card looking sequence of digits Luhn validation remains required as a complement.
Submitted by OP - 8 years ago
5
pcre

URL

URL Description from Dr. M. G. @ Brookes
Submitted by anonymous - 8 years ago
0
pcre

TCP/UDP port number

validates TCP/UDP port number (1..65535)
Submitted by sanchox - 8 years ago
1...529530531532533534535...563

match valid JSON

Vote

26

Regular Expression
pcre

/
(?(DEFINE) # Note that everything is atomic, JSON does not need backtracking if it's valid # and this prevents catastrophic backtracking (?<json>(?>\s*(?&object)\s*|\s*(?&array)\s*)) (?<object>(?>\{\s*(?>(?&pair)(?>\s*,\s*(?&pair))*)?\s*\})) (?<pair>(?>(?&STRING)\s*:\s*(?&value))) (?<array>(?>\[\s*(?>(?&value)(?>\s*,\s*(?&value))*)?\s*\])) (?<value>(?>true|false|null|(?&STRING)|(?&NUMBER)|(?&object)|(?&array))) (?<STRING>(?>"(?>\\(?>["\\\/bfnrt]|u[a-fA-F0-9]{4})|[^"\\\0-\x1F\x7F]+)*")) (?<NUMBER>(?>-?(?>0|[1-9][0-9]*)(?>\.[0-9]+)?(?>[eE][+-]?[0-9]+)?)) ) \A(?&json)\z
/
x
Open regex in editor

Description

Loading markdown...
Submitted by Mateon1 - 8 years ago