Regular Expressions 101

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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)\b(?:silence|black)_(?:start|end|duration):\s*\d+(?:\.\d+)?\b" Local $sString = "ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers" & @CRLF & _ " built with Apple clang version 11.0.0 (clang-1100.0.33.17)" & @CRLF & _ " configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.2_3 --enable-shared --enable-pthreads --..." & @CRLF & _ "[silencedetect @ 0x7fdd82d011c0] silence_start: 0" & @CRLF & _ "frame= 112 fps=0.0 q=-0.0 size=N/A time=00:00:05.00 bitrate=N/A speed=9.96x " & @CRLF & _ "[blackdetect @ 0x7fdd82e06580] black_start:0 black_end:5 black_duration:5" & @CRLF & _ "[silencedetect @ 0x7fdd82d011c0] silence_end: 5.06285 | silence_duration: 5.06285" & @CRLF & _ "frame= 211 fps=210 q=-0.0 size=N/A time=00:00:09.00 bitrate=N/A speed=8.97x " & @CRLF & _ "frame= 319 fps=212 q=-0.0 size=N/A time=00:00:13.00 bitrate=N/A speed=8.63x " & @CRLF & _ "frame= 427 fps=213 q=-0.0 size=N/A time=00:00:17.08 bitrate=N/A speed=8.51x " & @CRLF & _ "frame= 537 fps=214 q=-0.0 size=N/A time=00:00:22.00 bitrate=N/A speed=8.77x " & @CRLF & _ "frame= 650 fps=216 q=-0.0 size=N/A time=00:00:26.00 bitrate=N/A speed=8.63x " & @CRLF & _ "frame= 761 fps=217 q=-0.0 size=N/A time=00:00:31.00 bitrate=N/A speed=8.82x " & @CRLF & _ "frame= 874 fps=218 q=-0.0 size=N/A time=00:00:35.00 bitrate=N/A speed=8.71x " & @CRLF & _ "frame= 980 fps=217 q=-0.0 size=N/A time=00:00:39.20 bitrate=N/A speed=8.67x " & @CRLF & _ "... " & @CRLF & _ "frame= 5680 fps=213 q=-0.0 size=N/A time=00:03:47.20 bitrate=N/A speed=8.53x " & @CRLF & _ "[silencedetect @ 0x7fdd82d011c0] silence_start: 227.733" & @CRLF & _ "[silencedetect @ 0x7fdd82d011c0] silence_end: 229.051 | silence_duration: 1.3184" & @CRLF & _ "[silencedetect @ 0x7fdd82d011c0] silence_start: 229.051" & @CRLF & _ "[blackdetect @ 0x7fdd82e06580] black_start:229.28 black_end:230.24 black_duration:0.96" & @CRLF & _ "frame= 5757 fps=214 q=-0.0 Lsize=N/A time=00:03:50.28 bitrate=N/A speed=8.54x " & @CRLF & _ "video:3013kB audio:43178kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown" & @CRLF & _ "[silencedetect @ 0x7fdd82d011c0] silence_end: 230.28 | silence_duration: 1.22856" 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