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

r"
"
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)(?P<Module>^\w+)+\s+(?P<Name>.{1,}(?=Ke|Fi))+(?P<Type>(Kernel|File System))" Local $sString = "1394ohci 1394 OHCI-совместимый Kernel" & @CRLF & _ "3ware 3ware Kernel 19.05.2015 3:28:03" & @CRLF & _ "ACPI Драйвер Microsoft ACPI Kernel" & @CRLF & _ "AcpiDev Драйвер устройств с AC Kernel" & @CRLF & _ "acpiex Microsoft ACPIEx Drive Kernel" & @CRLF & _ "acpipagr Драйвер агрегатора про Kernel" & @CRLF & _ "AcpiPmi Драйвер устройства изм Kernel" & @CRLF & _ "acpitime Драйвер ACPI Wake Alar Kernel" & @CRLF & _ "Acx01000 Acx01000 Kernel" & @CRLF & _ "ADP80XX ADP80XX Kernel 10.04.2015 1:49:48" & @CRLF & _ "AFD Драйвер дополнительных Kernel" & @CRLF & _ "afunix afunix Kernel" & @CRLF & _ "ahcache Application Compatibil Kernel" & @CRLF & _ "amdgpio2 Драйвер GPIO-клиента A Kernel 07.02.2019 14:32:20" & @CRLF & _ "amdi2c Служба контроллера I2C Kernel 20.03.2019 9:57:33" & @CRLF & _ "AmdK8 AMD K8 драйвер процесс Kernel" & @CRLF & _ "AmdPPM Драйвер процессора AMD Kernel" & @CRLF & _ "amdsata amdsata Kernel 14.05.2015 17:14:52" & @CRLF & _ "amdsbs amdsbs Kernel 12.12.2012 2:21:44" & @CRLF & _ "amdxata amdxata Kernel 01.05.2015 5:55:35" & @CRLF & _ "AppID Драйвер AppID Kernel" & @CRLF & _ "applockerflt Драйвер фильтра Smartl Kernel" & @CRLF & _ "bindflt Windows Bind Filter Dr File System" & @CRLF & _ "bowser Браузер File System" & @CRLF & _ "BtFilter BtFilter Kernel 25.01.2019 10:46:26" 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