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

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?m)(\*\w+:\*\s+harmless)+" Local $sString = "VTDomainMalVendors: *Antiy-AVL*: malicious, *Kaspersky:* harmless, *Avira:* harmless, *Bkav:* undetected, *CMC Threat Intelligence:* harmless, *Snort IP sample list:* harmless, *0xSI_f33d:* undetected, *ViriBack:* harmless, *PhishLabs:* undetected, *K7AntiVirus:* harmless, *CINS Army.:* harmless, *Quttera:* harmless, *PrecisionSec:* undetected, *OpenPhish:* harmless, *VX Vault:* harmless, *ArcSight Threat Intelligence:* undetected, *AlienVault:* harmless, *Sophos:* harmless, *Phishtank:* harmless, *Cyan:* undetected, *Spam404:* harmless, *SecureBrain:* harmless, *CRDF:* harmless, *Fortinet:* harmless, *alphaMountain.ai:* , *Lionic:* harmless, *Cyble:* harmless, *Seclookup:* harmless, *Xcitium Verdict Cloud:* harmless, *Google Safebrowsing:* harmless, *SafeToOpen:* undetected, *ADMINUSLabs:* harmless, *ESTsecurity:* harmless, *Juniper Networks:* harmless, *Heimdal Security:* harmless, *AutoShun:* undetected, *Trustwave:* harmless, *AICC (MONITORAPP:* harmless, *CyRadar:* harmless, *Dr.Web:* , *Emsisoft:* harmless, *Abusix:* harmless, *Webroot:* harmless, *securolytics:* harmless, *AlphaSOC:* undetected, *Acronis:* harmless, *Quick Heal:* harmless, *URLQuery:* undetected, *Viettel Threat Intelligence* harmless, *DNS8:* harmless, *benkow.cc* , *EmergingThreats:* harmless, *Chong Lua Dao:* harmless, *Yandex Safebrowsing:* harmless, *Lumu:* undetected, *zvelo:* undetected, *Bfore.Ai PreCrime:* , *BitDefender:* harmless, *Blueliv:* harmless, *Certego:* harmless, *desenmascara.me:* , *ESET:* harmless, *Forcepoint ThreatSeeker:* harmless, *G-Data:* harmless, *GreenSnow:* harmless, *IPsum:* harmless, *Malwared:* harmless, *MalwarePatrol:* harmless, *malwares.com URL checker:* , *Phishing Database:* harmless, *PREBYTES:* harmless, *Scantitan:* harmless, *SCUMWARE.org:* , *SOCRadar:* harmless, *StopForumSpam:* harmless, *Sucuri SiteCheck:* harmless, *ThreatHive:* harmless, *Threatsourcing:* harmless, *URLhaus:* harmless, *ZeroCERT:* harmless, *Cluster25:* undetected, *Criminal IP:* undetected, *CrowdSec:* undetected, *Netcraft:* undetected, *PhishFort:* undetected, *Segasec:* undetected, *VIPRE:* undetected" Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH) Local $aFullArray[0] For $i = 0 To UBound($aArray) -1 _ArrayConcatenate($aFullArray, $aArray[$i]) Next $aArray = $aFullArray ; Present the entire match result _ArrayDisplay($aArray, "Result")

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 AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm