Regular Expressions 101

Save & Share

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)([^,]+)|(\"[^\"]+\")" Local $sString = "79.151.89.210 - - [08/Oct/2018:21:59:59 +0200] "GET /web/smartphone/scripts/onlineBanka-nt.min.js?v=20180912 HTTP/1.1" 200 122582 "-" "Mozilla/5.0 (Linux; Android 5.1.1; LG-H955 Build/LMY47S; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/69.0.3497.100 Mobile Safari/537.36|2|KBM_NATIVO|020302" "-" 15600 0 - - "FA66A7B9D443B2C4111E8F8E36DA44AD.worker37"" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "ce.73989.48.kbgesdek.8523952889_EX-00028_0760831.PDF" & @CRLF & _ "ce.74106.48.kbgesdek.8527118018_EX-00028_0729298.pdf" & @CRLF & _ "ce.74844.48.kbgesdek.8527191264_EX-00028_0728038.pdf" & @CRLF & _ "ce.74844.48.kbgesdek.8527191264_EX-00028.pdf" & @CRLF & _ "" & @CRLF & _ "#^ce[.]([0-9]+)[.]([0-9]+)[.]([^.]+)[.](.*)" & @CRLF & _ "#^ce[.]([0-9]+)[.]([0-9]+)[.]kbgesdek[.]*[.](.*pdf)" & @CRLF & _ "^ce[.]([0-9]+)[.]([0-9]+)[.]kbgesdek[.]([0-9]{10}_EX-[0-9]{5}_[0-9]{7})[.](pdf)" & @CRLF & _ "^ce[.]([0-9]+)[.]([0-9]+)[.]kbgesdek[.]([0-9]{10}_EX-[0-9]{5}_[0-9]{7})[.]([pP][dD][fF])" & @CRLF & _ "^ce[.]([0-9]+)[.]([0-9]+)[.]kbgesdek[.]([0-9]{10}_EX-[0-9]{1,5}_[0-9]{1,7})[.]([pP][dD][fF])" & @CRLF & _ "https://regex101.com/r/XX6Jra/5" 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