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

/
/

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 = "<div class="listing-img-container media-cover text-center">[\s\S]*?src="([^"]+?\.jpg)" Local $sString = " " & @CRLF & _ " <div class="panel-body panel-card-section">" & @CRLF & _ " <div class="media">" & @CRLF & _ " <a href="/users/show/227945"" & @CRLF & _ " class="pull-right media-photo media-round card-profile-picture card-profile-picture-offset">" & @CRLF & _ " <img src="https://a0.muscache.com/ic/users/227945/profile_pic/1388936013/original.jpg?interpolation=lanczos-none&amp;crop=w:w;*,*&amp;crop=h:h;*,*&amp;resize=68:*&amp;output-format=jpg&amp;output-quality=70" alt="">" & @CRLF & _ " </a>" & @CRLF & _ " <a href="/rooms/2945119?s=kOTS" class="text-normal">" & @CRLF & _ " <div title="Design 3BDR Rutera Flat by Old Town" class="h5 listing-name text-truncate row-space-top-1">" & @CRLF & _ " Design 3BDR Rutera Flat by Old Town" & @CRLF & _ " </div>" & @CRLF & _ " </a>" & @CRLF & _ " <div class="text-muted listing-location text-truncate"><a href="/rooms/2945119?s=kOTS" class="text-normal link-reset">" & @CRLF & _ " Entire home/apt &middot; 21 reviews &middot; Staré Město, Prague" & @CRLF & _ "</a>" & @CRLF & _ "</div>" & @CRLF & _ " </div>" & @CRLF & _ " " & @CRLF & _ " </div>" & @CRLF & _ " </div>" & @CRLF & _ " </div>" & @CRLF & _ " <div itemscope itemtype="http://schema.org/Enumeration" class="col-6 row-space-1">" & @CRLF & _ " <div data-lat="50.08928960447257"" & @CRLF & _ " data-lng="14.436735694282277"" & @CRLF & _ " data-name="Funky Central Art Apt with Terrace!"" & @CRLF & _ " data-url="/rooms/2688532?s=kOTS"" & @CRLF & _ " data-user="1037514"" & @CRLF & _ " data-id="2688532"" & @CRLF & _ " class="listing"" & @CRLF & _ " itemscope itemtype="http://schema.org/Enumeration">" & @CRLF & _ " " & @CRLF & _ " <div class="panel-image listing-img">" & @CRLF & _ " <a href="/rooms/2688532?s=kOTS" class="media-photo media-cover">" & @CRLF & _ " <div class="listing-img-container media-cover text-center">" & @CRLF & _ " <img src="https://a0.muscache.com/airbnb/static/page3/v3/room_default_no_photos-d10f15172f4bf511e23e152ece74faaa.png" data-current="0" class="img-responsive-height hide" data-urls="[&quot;https://a2.muscache.com/ic/pictures/37070267/7555e7e6_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a0.muscache.com/ic/pictures/35170017/c702a86e_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a2.muscache.com/ic/pictures/37070259/4e7ef180_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a2.muscache.com/ic/pictures/35170032/a0f198c9_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a2.muscache.com/ic/pictures/37070286/2fee34b1_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a2.muscache.com/ic/pictures/35170045/eba1336b_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a0.muscache.com/ic/pictures/37070292/9ee05643_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a0.muscache.com/ic/pictures/35170058/b9dc763d_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a1.muscache.com/ic/pictures/37070298/cac270ba_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a2.muscache.com/ic/pictures/35170068/abed8d24_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a1.muscache.com/ic/pictures/37070305/77f5021f_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a1.muscache.com/ic/pictures/35170087/0fae08f3_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a0.muscache.com/ic/pictures/37070312/70835c4f_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a1.muscache.com/ic/pictures/35170102/4290046e_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a0.muscache.com/ic/pictures/37070326/14068f20_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a1.muscache.com/ic/pictures/35170261/13b250d4_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a1.muscache.com/ic/pictures/37070330/79e9df48_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a0.muscache.com/ic/pictures/35170214/bb9ecd68_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a2.muscache.com/ic/pictures/37070341/bf823f1b_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a0.muscache.com/ic/pictures/35169982/0629a75b_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a0.muscache.com/ic/pictures/37070352/cdf837f3_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a2.muscache.com/ic/pictures/35170120/9e97e996_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a2.muscache.com/ic/pictures/37070369/99ac0d0a_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a1.muscache.com/ic/pictures/35170137/d0623b29_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a2.muscache.com/ic/pictures/37071083/b7f61b16_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a0.muscache.com/ic/pictures/35170162/6ce820a7_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a1.muscache.com/ic/pictures/37071085/6d33eb21_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a2.muscache.com/ic/pictures/35170183/c0016f10_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a2.muscache.com/ic/pictures/37071088/42fafbe0_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a0.muscache.com/ic/pictures/35170201/a196880c_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a2.muscache.com/ic/pictures/37071098/7ad08efd_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a2.muscache.com/ic/pictures/35170299/aac56da5_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a0.muscache.com/ic/pictures/37071881/3a0a19ea_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a0.muscache.com/ic/pictures/35170277/17580bf8_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a2.muscache.com/ic/pictures/35170227/73939649_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;, &quot;https://a1.muscache.com/ic/pictures/35170249/9d975bfb_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70&quot;]">" & @CRLF & _ " </div>" & @CRLF & _ " </a>" & @CRLF & _ " " & @CRLF & _ " <div class="target-prev target-control block-link">" & @CRLF & _ " <i class="icon icon-chevron-left icon-size-2 icon-white"></i>" & @CRLF & _ " </div>" & @CRLF & _ " " & @CRLF & _ " <a class="target-details block-link" & @CRLF & _ " "" & @CRLF & _ " href="/rooms/2688532?s=kOTS"></a>" & @CRLF & _ " " & @CRLF & _ " <div class="panel-overlay-bottom-left panel-overlay-label panel-overlay-listing-label">" & @CRLF & _ " <div>" & @CRLF & _ " <sup class="h6 text-contrast">&#75;&#269;</sup>" & @CRLF & _ " <span class="h3 price-amount">1007</span>" & @CRLF & _ " <sup class="h6 text-contrast"></sup>" & @CRLF & _ " </div>" & @CRLF & _ " " & @CRLF & _ " </div>" & @CRLF & _ " " & @CRLF & _ " <div class="target-next target-control block-link">" & @CRLF & _ " <i class="icon icon-chevron-right icon-size-2 icon-white"></i>" & @CRLF & _ " </div>" & @CRLF & _ " " & @CRLF & _ " <div class="panel-overlay-top-right wl-social-connection-panel">" & @CRLF & _ " <span class="rich-toggle wish_list_button wishlist-button"" & @CRLF & _ " data-img="https://a2.muscache.com/ic/pictures/37070267/7555e7e6_original.jpg?interpolation=lanczos-none&amp;size=x_medium&amp;output-format=jpg&amp;output-quality=70"" & @CRLF & _ " data-name="Funky Central Art Apt with Terrace!"" & @CRLF & _ " data-address="Josefov, Prague"" & @CRLF & _ " data-hosting_id="2688532">" & @CRLF & _ " <input type="checkbox"" & @CRLF & _ " id="wishlist-widget-2688532"" & @CRLF & _ " name="wishlist-widget-2688532"" & @CRLF & _ " data-for-hosting="2688532">" & @CRLF & _ " <label for="wishlist-widget-2688532">" & @CRLF & _ " <i class="icon icon-heart icon-pink icon-rausch icon-size-2 rich-toggle-checked"></i>" & @CRLF & _ " <i class="icon icon-heart wishlist-heart-unchecked icon-size-2 rich-toggle-unchecked"></i>" & @CRLF & _ " <i class="icon icon-heart-alt icon-white icon-size-2"></i>" & @CRLF & _ " </label>" & @CRLF & _ " </span>" & @CRLF & _ " " & @CRLF & _ " " & @CRLF & _ " </div>" & @CRLF & _ " " & @CRLF & _ " </div>" & @CRLF & _ " " & @CRLF & _ " <div class="panel-body panel-card-section">" & @CRLF & _ " <div class="media">" & @CRLF & _ " <a href="/users/show/1037514"" & @CRLF & _ " class="pull-right media-photo media-round card-profile-picture card-profile-picture-offset">" & @CRLF & _ " <img src="https://a0.muscache.com/ic/users/1037514/profile_pic/1360186418/original.jpg?interpolation=lanczos-none&amp;crop=w:w;*,*&amp;crop=h:h;*,*&amp;resize=68:*&amp;output-format=jpg&amp;output-quality=70" alt="">" & @CRLF & _ " </a>" & @CRLF & _ " <a href="/rooms/2688532?s=kOTS" class="text-normal">" & @CRLF & _ " <div title="Funky Central Art Apt with Terrace!" class="h5 listing-name text-truncate row-space-top-1">" & @CRLF & _ " Funky Central Art Apt with Terrace!" & @CRLF & _ " </div>" & @CRLF & _ " </a>" & @CRLF & _ " <div class="text-muted listing-location text-truncate"><a href="/rooms/2688532?s=kOTS" class="text-normal link-reset">" & @CRLF & _ " Entire home/apt &middot; 38 reviews &middot; Josefov, Prague" & @CRLF & _ "</a>" & @CRLF & _ "</div>" & @CRLF & _ " </div>" & @CRLF & _ " " & @CRLF & _ " </div>" & @CRLF & _ " </div>" & @CRLF & _ " </div>" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "</div>" & @CRLF & _ "" Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYFULLMATCH) ; Present the entire match result _ArrayDisplay($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