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

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?m)(?:(?:https?|ftp):\/\/)?(?:\S+(?::\S*)?@)?(?:((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]|[0-9])\.){3}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]|[0-9])|(?:(?:[a-z\u00a1-\uffff0-9]+-?)*[a-z\u00a1-\uffff0-9]+)(?:\.(?:[a-z\u00a1-\uffff0-9]+-?)*[a-z\u00a1-\uffff0-9]+)*(?:\.(?:[a-z\u00a1-\uffff]{2,})))(?::\d{2,5})?(?:\/[^\s]*)?" Local $sString = "https://face.com" & @CRLF & _ "http://face.com" & @CRLF & _ "https://www.face.com/" & @CRLF & _ "face.com" & @CRLF & _ "www.face.com" & @CRLF & _ "w3.face.com" & @CRLF & _ "0.0.0.0" & @CRLF & _ "ac31.23.53.122asd" & @CRLF & _ "92.168.202.9712121212121" & @CRLF & _ "" & @CRLF & _ "1292.168.202.97" & @CRLF & _ "192.168.202.97" & @CRLF & _ "224.168.202.97" & @CRLF & _ "92.18.2.97" & @CRLF & _ "http://74.251.154.247/find-ip-address-of-web-site.html" & @CRLF & _ "" & @CRLF & _ "74.201.154.247/find-ip-address-of-web-site.html" & @CRLF & _ "" & @CRLF & _ "74.201.154.247" & @CRLF & _ "" & @CRLF & _ "foo.com" & @CRLF & _ "" & @CRLF & _ "http://92.18.2.97" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "SHOULD MATCH:" & @CRLF & _ "" & @CRLF & _ "http://foo.com/blah_blah" & @CRLF & _ "http://foo.com/blah_blah/" & @CRLF & _ "http://foo.com/blah_blah_(wikipedia)" & @CRLF & _ "http://foo.com/blah_blah_(wikipedia)_(again)" & @CRLF & _ "http://www.example.com/wpstyle/?p=364" & @CRLF & _ "https://www.example.com/foo/?bar=baz&inga=42&quux" & @CRLF & _ "http://✪df.ws/123" & @CRLF & _ "http://userid:password@example.com:8080" & @CRLF & _ "http://userid:password@example.com:8080/" & @CRLF & _ "http://userid@example.com" & @CRLF & _ "http://userid@example.com/" & @CRLF & _ "http://userid@example.com:8080" & @CRLF & _ "http://userid@example.com:8080/" & @CRLF & _ "http://userid:password@example.com" & @CRLF & _ "http://userid:password@example.com/" & @CRLF & _ "http://142.42.1.1/" & @CRLF & _ "http://142.42.1.1:8080/" & @CRLF & _ "http://➡.ws/䨹" & @CRLF & _ "http://⌘.ws" & @CRLF & _ "http://⌘.ws/" & @CRLF & _ "http://foo.com/blah_(wikipedia)#cite-1" & @CRLF & _ "http://foo.com/blah_(wikipedia)_blah#cite-1" & @CRLF & _ "http://foo.com/unicode_(✪)_in_parens" & @CRLF & _ "http://foo.com/(something)?after=parens" & @CRLF & _ "http://☺.damowmow.com/" & @CRLF & _ "http://code.google.com/events/#&product=browser" & @CRLF & _ "http://j.mp" & @CRLF & _ "ftp://foo.bar/baz" & @CRLF & _ "http://foo.bar/?q=Test%20URL-encoded%20stuff" & @CRLF & _ "http://مثال.إختبار" & @CRLF & _ "http://例子.测试" & @CRLF & _ "http://उदाहरण.परीक्षा" & @CRLF & _ "http://-.~_!$&'()*+,;=:%40:80%2f::::::@example.com" & @CRLF & _ "http://1337.net" & @CRLF & _ "http://a.b-c.de" & @CRLF & _ "http://223.255.255.254" & @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