Regular Expressions 101

Order By

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

Community Patterns

8

repeat group match

Python
no description available
Submitted by anonymous - 9 years ago
40

URL regexp

PCRE (PHP <7.3)
A quite neat regular expression for URLs, e-mails..., I found on Matthew O'Riordan's blog.
Submitted by Matthew O'Riordan - 12 years ago
35

http://

PCRE (PHP <7.3)
no description available
Submitted by Mitus M. - 11 years ago
23

userName

PCRE (PHP <7.3)
1-15 alphanumeric login name
Submitted by gsanchezc - 10 years ago
7

rsyslog test

PCRE (PHP <7.3)
global modifier
Submitted by dtmland - 10 years ago
7

Any positive integer except zero

PCRE (PHP <7.3)
no description available
Submitted by Harsh - 9 years ago
7

Date and time format - ISO 8601

ECMAScript (JavaScript)
Matches ISO 8601 date formats
Submitted by Ettienne - 9 years ago
31

Email address (most used)

ECMAScript (JavaScript)
Email address, most used cases
Submitted by Jago - 9 years ago
10

Strip Email ID from Name

PCRE (PHP <7.3)
Use this regex to select all characters up to the "" bracket. It works across multiple lines. You can get an email list with only the IDs. This is the pattern it matches: Alpha Person Step 1 (.*) [$ Step 2 [$.$] (.*) gives you aperson@whatever.org...
Submitted by Jonathan Davidar - 10 years ago
9

Removing an XML Nodes namespace prefix from a XML string wit

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
26

match valid JSON

PCRE (PHP <7.3)
Matches any valid JSON object, matches recursively. Passes all JSON test cases I found.
Submitted by Mateon1 - 10 years ago
12

Remove Special Ascii Characters from unicode String

PCRE (PHP <7.3)
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 - 10 years ago
12

Username with "_" "-"

ECMAScript (JavaScript)
no description available
Submitted by Gianvy - 9 years ago
4

For Auto RTFs

PCRE (PHP <7.3)
no description available
Submitted by Dan Bloomquist - 12 years ago
4

outer Parentheses

PCRE (PHP <7.3)
Finds the outermost pair of parentheses. Compatible with any amount of nesting
Submitted by Jonas Gerneth - 11 years ago
4

Command handling

PCRE (PHP <7.3)
Handles commands like in CMD
Submitted by anonymous - 10 years ago
4

parsing a numeric strings with backslash using regexp

PCRE (PHP <7.3)
no description available
Submitted by A.K. Asik - 10 years ago
4

uri parser

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
4

Match nth occurence of pattern

PCRE (PHP <7.3)
Match nth occurence of the patterns in the inner parenthesis. Put nth that you want to match in the curly braces (here, {3}).
Submitted by Alex Hall - 10 years ago
4

Equation matching (without equal)

Python
use this to get value of any side of an equation. You can combine this with https://regex101.com/r/fH5kJ1/1
Submitted by Kerosene2000 - 9 years ago
1...894895896897898...902

Community Library Entry

0

Regular Expression
PCRE (PHP <7.3)

/
(?:[\S]+received_bytes_count )(?:true|false) ([\S]+)|(?:[\S]+received_bytes_count )([\S]+) (?:true|false)|(?:[\S]+received_bytes_count )([\S]+)
/
g
Open regex in editor

Description

useful for filtering data from Gooogle Compute Engine monitoring into grafana

Submitted by NR0Q - 4 years ago