Regular Expressions 101

Save & Share

  • Regex Version: ver. 1
  • Update Regex
    ctrl+⇧+s
  • Save new Regex
    ctrl+s
  • Add to Community Library

Flavor

  • PCRE2 (PHP >=7.3)
  • PCRE (PHP <7.3)
  • ECMAScript (JavaScript)
  • Python
  • Golang
  • Java 8
  • .NET 7.0 (C#)
  • Rust
  • Regex Flavor Guide

Function

  • Match
  • Substitution
  • List
  • Unit Tests

Tools

Sponsors
There are currently no sponsors. Become a sponsor today!
An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
gm

Test String

Code Generator

Language

Generated Code

$re = '/(?<date>\d[\d:.]+)\W+(?<InPorts>\d+):\s*(?<OutPort>\d+)\W+G-MST:\s*(?<GMST>\w+)\W+guid=(?<Guid>[^"]+)"\W+(?<SourceIP>\d{1,3}(?:\.\d{1,3}){3})\W+(?<targetIP>\d{1,3}(?:\.\d{1,3}){3})\W+(?<SourceSpeed>\d+)\W+(?<TargetSpeed>\d+)\D+(?<AudioType>\d+)\D+(?<rsn>\d+)\W+(?<utc>\d[\d.:]*)\D+(?<pl>\d+)\D+(?<s>\d+)\D+(?<r>\d+)\D+(?<l>\d+)\D+(?<j>\d+)\D+(?<u>\d+)\D+(?<o>\d+)\D+(?<flags>0x\d+).*?:(?<sip>[^"]*)"\D+(?<vpn>\d+)/m'; $str = '08:07:46.914 ( 1708: 8624) G-MST: 400000EF " guid=00040000-73b2-5c7f-2295-00104941e7b0" ("10.10.60.3","10.10.29.251"),(10292, 59046),2(ULaw),rsn:1,12:05:15.623 (UTC),pl:20,(s:7525, r:7557, l:0),(j:0,u:27037,o:0) flgs:0x00000000 "sip:TGrp_5,p111@10.10.60.3:5441",vpn:0'; preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0); // Print the entire match result var_dump($matches);

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php