Regular Expressions 101

Save & Share

  • Regex Version: ver. 1
  • Update Regex
    ctrl+⇧+s
  • Save new Regex
    ctrl+s
  • Add to Community Library

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

/
/
gm

Test String

Code Generator

Language

Generated Code

$re = '/(?:<w-block-content.*[\s\S]*?<div>)([\s\S]*?)(?:<\/div>((?!<\/div>))*[\s]*?<\/span>[\s\S]*?<\/w-block-content>)/m'; $str = '</tr> <td> <div draggable="true" class="source master draggable-box wysiwyg-block" data-block-type="master" data-block-id="96e80afb-afa0-4e46-bfb7-34b80da76112" style="opacity: 1;"> <w-block-content data-block-content-id="96e80afb-afa0-4e46-bfb7-34b80da76112"><span class="source-block-tooltip"> <div> Další master<br><div><b>Master č. 2</b> </div><br> </div> </span></w-block-content> </div> </td> </tr> </tr> <td> <div draggable="true" class="source master draggable-box wysiwyg-block" data-block-type="master" data-block-id="96e80afb-afa0-4e46-bfb7-34b80da76112" style="opacity: 1;"> <w-block-content data-block-content-id="96e80afb-afa0-4e46-bfb7-34b80da76112"><span class="source-block-tooltip"> <div> Další master<br><b>Master č. 2</b><br> </div> </span></w-block-content> </div> </td> </tr> '; preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0); // Print the entire match result var_dump($matches);

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 PHP, please visit: http://php.net/manual/en/ref.pcre.php