Regular Expressions 101

Save & Share

  • Regex Version: ver. 3
  • 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 = '/\\\\"(title|url)\\\\": \\\\"[^"]*\\\\"/m'; $str = '1. Есть строки в текстовом файле: "title": "разный текст" Найти всё в этом файле. 2. Есть строки в текстовом файле: "url": "разный текст" Найти всё в этом файле. 3. Есть всё в общей строке в текстовом файле: "title": "разный текст", "url": "разный текст" [{"hostName": "youtube", "name": "Rock & Roll 50\'s Mix", "type": "VIDEO", "iconimage": "https://i.ytimg.com/vi/gLzn8nDVSo8/hq720.jpg?sqp=-...", "resolver": "youtube", "data": "{\\"category\\": \\"video\\", \\"name\\": \\"category\\", \\"title\\": \\"Rock & Roll 50\'s Mix\\", \\"url\\": \\"http://www.youtube.com/watch?v=gLzn8nDVSo8\\", \\"time\\": \\"9 \\\\u043b\\\\u0435\\\\u0442 \\\\u043d\\\\u0430\\\\u0437\\\\u0430\\\\u0434\\", \\"desc\\": \\"Duration: 11:38 | 71\\\\u00a0528\\\\u00a0835 \\\\u043f\\\\u0440\\\\u043e\\\\u0441\\\\u043c\\\\u043e\\\\u0442\\\\u0440\\\\u043e\\\\u0432 | 9 \\\\u043b\\\\u0435\\\\u0442 \\\\u043d\\\\u0430\\\\u0437\\\\u0430\\\\u0434\\\\ndjdirtybeat\\\\nPLEASE LIKE MY FACEBOOK PAGE, Download Here https://soundcloud.com/mauricio-villegas-12\\\\u00a0...\\", \\"type\\": \\"video\\", \\"icon\\": \\"https://i.ytimg.com/vi/gLzn8nDVSo8/hq720.jpg?sqp=-..."}", "description": "Duration: 11:38 | 71\\u00a0528\\u00a0835 \\u043f\\u0440\\u043e\\u0441\\u043c\\u043e\\u0442\\u0440\\u043e\\u0432 | 9 \\u043b\\u0435\\u0442 \\u043d\\u0430\\u0437\\u0430\\u0434\\ndjdirtybeat\\nPLEASE LIKE MY FACEBOOK PAGE, Download Here https://soundcloud.com/mauricio-villegas-12\\u00a0..."}, {"hostName": "youtube", "name": "Free - All Right Now", "type": "VIDEO", "iconimage": "https://i.ytimg.com/vi/YExuLkIaQ7U/hq720.jpg?sqp=-...", "resolver": "youtube", "data": "{\\"category\\": \\"video\\", \\"name\\": \\"category\\", \\"title\\": \\"Free - All Right Now\\", \\"url\\": \\"http://www.youtube.com/watch?v=YExuLkIaQ7U\\", \\"time\\": \\"11'; preg_match_all($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