Regular Expressions 101

Please wait while the app is loading...

Regular Expressions 101

@regex101DonateSponsorContactBug Reports & FeedbackWikiWhat's new?

Order By

Sponsors

Library entries

13
pcre

PHP variable name

Valid PHP variable name as defined in the manual at http://php.net/manual/en/language.variables.basics.php
Submitted by Erin Millard - 10 years ago
13
pcre

regex101.com id grabber

grabs the ID for the regex101.com permalink to code
Submitted by chris mccoy - 9 years ago
12
pcre

URL Validator

Validates - URLs with schemes - http, https and ftp Relative URL starting with / and ../
Submitted by anonymous - 8 years ago
12
pcre

Match Gmail Email

Match Gmail Email
Submitted by Óscar Enríquez - 8 years ago
12
pcre

MikroTik FireWall

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 - 8 years ago
11
pcre

Demonstration from front page

This is just the demonstration from the front page.
Submitted by Lindrian - 10 years ago
11
pcre

Address Check Validation

Check for true or false street address format
Submitted by Dilip Borad - 9 years ago
11
pcre

Date(Including Leap Year) YYYY-MM-DD hh:mm:ss

Validates DateTime of format YYYY-MM-DD hh:mm:ss including Leap Year
Submitted by Madhan - 9 years ago
11
pcre

Strip Email ID from Name

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 - 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
11
pcre

Codice fiscale

Check "codice fiscale"
Submitted by Luca - 8 years ago
10
pcre

Just validate one sequence of

sdfs sdfs FLBREV00022230 dsfsdfs sdfsf FLBREV00022234 In this case is false
Submitted by Fiipe - 8 years ago
10
pcre

remove comments from php code

no description available
Submitted by anonymous - 8 years ago
10
pcre

RFC3339 DateTime

Validates a RFC3339 DateTime format. Does not validates the Data
Submitted by anonymous - 7 years ago
9
pcre

Validate Base64 single-line string

no description available
Submitted by ka. - 10 years ago
9
pcre

Removing an XML Nodes namespace prefix from a XML string wit

no description available
Submitted by anonymous - 9 years ago
9
pcre

Youtube ID match

This regex will match any Youtube video ID thrown at it and return one capturing group containing the ID.
Submitted by Jacob Overgaard - 9 years ago
9
pcre

Fixo LDN CSP e SEM CSP

no description available
Submitted by Marcos Müller - 8 years ago
9
pcre

only numbers

A string with only numbers in
Submitted by Gotts - 7 years ago
9
pcre

Letters, numbers and blank space

The following regular expression matches only letter a-z A-Z numbers 0-9 and a blank space for a given string.
Submitted by Jordan Raychev - 7 years ago
12345...481

remove comments from php code

Vote

10

Regular Expression
pcre

@
(?(DEFINE) (?<next_open_tag> [^<]*+ (?i: <++[^<?s][^<]* | <++(?! \?php | \?= | script\s*language\s*=\s*([\'"]?)php\g{-1}\s*> ) [^<]* )*+ (?i: <++(?: \?php | \?= | [^>]+ ) | \z ) ) ) \A (?&next_open_tag) \K | [^'"`/#<?]*+ (?: '(?:[^'\\]+|\\.)*+' [^\'"`/#<?]* | "(?:[^"\\]+|\\.)*+" [^\'"`/#<?]* | `(?:[^`\\]+|\\.)*+` [^\'"`/#<?]* | /(?![/*]) [^\'"`/#<?]* # stop for // or /* | # if close tag ?> \? (?: >(?&next_open_tag)[^\'"`/#<?]* | ) | < (?: # heredoc or nowdoc <<[\ \t]*([\'"]?) ([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*) \g{-2}[\ \t]*[\r\n] (?-s:.*+[\r\n])*? \g{-1}[\r\n;] [^\'"`/#<?]* | (?i: /script\s*>) (?&next_open_tag) [^\'"`/#<?]* | [^\'"`/#<?]* ) )*+ \K (?: (?://|\#)(?:[^\n?]+|\?(?!>))*+ # single line comment // и # | /\*(?:[^*]+|\*(?!/))*+\*/ # multi line comment /* */ )?
@
xsg
Open regex in editor

Description

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