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

/
/
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)matei 170 associative arrays" Local $sString = "<!DOCTYPE html>" & @CRLF & _ "<html lang="en">" & @CRLF & _ "<head>" & @CRLF & _ " <meta charset="UTF-8">" & @CRLF & _ " <title>Community Login</title>" & @CRLF & _ "</head>" & @CRLF & _ "<body>" & @CRLF & _ "" & @CRLF & _ "<h2>Community Login</h2>" & @CRLF & _ "" & @CRLF & _ "<form method="post">" & @CRLF & _ " <label for="username">Username:</label>" & @CRLF & _ " <input type="text" name="username" id="username"><br><br>" & @CRLF & _ "" & @CRLF & _ " <label for="password">Password:</label>" & @CRLF & _ " <input type="password" name="password" id="password"><br><br>" & @CRLF & _ "" & @CRLF & _ " <button type="submit" name="login">Login</button>" & @CRLF & _ "</form>" & @CRLF & _ "" & @CRLF & _ "<?php" & @CRLF & _ "$communityUsers = [" & @CRLF & _ " "GAM" => password_hash("gamgamstyle", PASSWORD_ARGON2ID)," & @CRLF & _ " "MAO" => password_hash("gentoo", PASSWORD_ARGON2ID)," & @CRLF & _ " "MaxiObe" => password_hash("iloveallmias", PASSWORD_ARGON2ID)" & @CRLF & _ "];" & @CRLF & _ "" & @CRLF & _ "if (isset($_POST['login'])) {" & @CRLF & _ " $enteredUsername = $_POST['username'];" & @CRLF & _ " $enteredPassword = $_POST['password'];" & @CRLF & _ "" & @CRLF & _ " if (!empty($enteredUsername) && !empty($enteredPassword)) {" & @CRLF & _ " if (array_key_exists($enteredUsername, $communityUsers)) {" & @CRLF & _ " if (password_verify($enteredPassword, $communityUsers[$enteredUsername])) {" & @CRLF & _ " echo "<p style='color:green;'>Login successful! Welcome, " . htmlspecialchars($enteredUsername) . " </p>";" & @CRLF & _ " } else {" & @CRLF & _ " echo "<p style='color:red;'>Incorrect password.</p>";" & @CRLF & _ " }" & @CRLF & _ " } else {" & @CRLF & _ " echo "<p style='color:red;'>Username not found.</p>";" & @CRLF & _ " }" & @CRLF & _ " } else {" & @CRLF & _ " echo "<p style='color:red;'>Please fill in both fields!</p>";" & @CRLF & _ " }" & @CRLF & _ "}" & @CRLF & _ "?>" & @CRLF & _ "" & @CRLF & _ "</body>" & @CRLF & _ "</html>" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @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