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

/
/
gs

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 = "(?s)([0-9]+)\n([0-9]{2}:[0-9]{2}:[0-9]{2}.[0-9]{3}) --> ([0-9]{2}:[0-9]{2}:[0-9]{2}.[0-9]{3})\n(.*?)\n\n" Local $sString = "1" & @CRLF & _ "00:01:34,769 --> 00:01:36,168" & @CRLF & _ "Família Soprano" & @CRLF & _ "" & @CRLF & _ "2" & @CRLF & _ "00:01:36,304 --> 00:01:37,737" & @CRLF & _ "Peso" & @CRLF & _ "" & @CRLF & _ "3" & @CRLF & _ "00:01:50,117 --> 00:01:53,780" & @CRLF & _ "Ela é dançarina. Broadway," & @CRLF & _ "shows de verão, essas coisas." & @CRLF & _ "" & @CRLF & _ "4" & @CRLF & _ "00:01:53,955 --> 00:01:56,924" & @CRLF & _ "Estava me dizendo que Ginny..." & @CRLF & _ "ela dançava, não é?" & @CRLF & _ "" & @CRLF & _ "5" & @CRLF & _ "00:01:57,124 --> 00:01:59,922" & @CRLF & _ "Deu aula de balé anos atrás." & @CRLF & _ "" & @CRLF & _ "6" & @CRLF & _ "00:02:05,032 --> 00:02:08,195" & @CRLF & _ "- Quem é?" & @CRLF & _ "- Ninguém. Jersey." & @CRLF & _ "" & @CRLF & _ "7" & @CRLF & _ "00:02:08,369 --> 00:02:10,394" & @CRLF & _ "Do grupo de Ralph Cifaretto." & @CRLF & _ "" & @CRLF & _ "" 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