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

/
/
g

Test String

Code Generator

Language

Generated Code

// include the latest version of the regex crate in your Cargo.toml extern crate regex; use regex::Regex; fn main() { let regex = Regex::new(r"\DVide[[a-zA-Z]:{\d*}]").unwrap(); let string = "\"<strong>YENİ BİR MACERA</strong><br /> [Video:{544774}]​<br /> 2005 T&uuml;rkiye G&uuml;zeli Hande Subaşı, 2012&rsquo;de evlendiği Can Tursan&rsquo;dan Mart&rsquo;ta anlaşmalı olarak boşanmıştı. Ama daha 2 hafta &ouml;nce Muğla Akyaka&rsquo;da eski kocasıyla tatil yapmış, herkesi şaşırtmıştı.<br /> <br /> <img style=\"width:100%\" data-url=\"{ServerPath}/images/original/2016/07/21/7835971.jpeg?w=658&amp;h=370\" src=\"//icdncube.posta.com.tr/images/original/2016/07/21/7835971.jpeg?w=658&amp;h=370\" /><br /> <br /> <span style=\"color:#FF0000\"><em>Hande Subaşı eski eşi Can Tursan ile 2 hafta &ouml;nce Bodrum-Akyaka&rsquo;da tatil yapmıştı.</em></span><br /> U&ccedil;ankuş TV&rsquo;deki &lsquo;İki Kadın Arasında&rsquo; programının iddiasına g&ouml;re; Hande Subaşı, Can Tursan&rsquo;ı tamamen unuttu, oyuncu Rıza Kocaoğlu ile yeni bir maceraya yelken a&ccedil;tı.<br /> <strong>BOY FARKI SORUN OLMAMIŞ</strong><br /> <br /> <img style=\"width:100%\" data-url=\"{ServerPath}/images/original/2016/07/21/7835969.jpg?w=658&amp;h=370\" src=\"//icdncube.posta.com.tr/images/original/2016/07/21/7835969.jpg?w=658&amp;h=370\" /><br /> <br /> Hande Subaşı ile Rıza Kocaoğlu&rsquo;nun ilişkisi G&uuml;m&uuml;şl&uuml;k&rsquo;te başladı. Ge&ccedil;tiğimiz g&uuml;nlerde birlikte eğlenirken g&ouml;r&uuml;len sevgililerin samimi oldukları s&ouml;ylendi. Rıza Kocaoğlu 1 yıllık sevgilisi Eyl&uuml;l Su Sapan&rsquo;dan 3 ay &ouml;nce ayrılmıştı.<br /> <img style=\"width:100%\" data-url=\"{ServerPath}/images/original/2016/07/21/7835971.jpeg?w=658&amp;h=370\" src=\"//icdncube.posta.com.tr/images/original/2016/07/21/7835971.jpeg?w=658&amp;h=370\" /><br /> [Video:{544774}]​<br /> [Content:{1221834}]<br /> <strong>Son bir not: Hande Subaşı&rsquo;nın boyu tam 1.80 santim, Rıza Kocaoğlu ise 1.70.</strong><br /> <br /> <img style=\"width:100%\" data-url=\"{ServerPath}/images/original/2016/07/21/7835970.jpeg?w=658&amp;h=370\" src=\"//icdncube.posta.com.tr/images/original/2016/07/21/7835970.jpeg?w=658&amp;h=370\" /><br /> <br /> [Content:{1221785}]<br /> <strong>Rıza Kocaoğlu ile 3 ay &ouml;nce ayrıldığı Eyl&uuml;l Su Sapan&nbsp;</strong><br /> &nbsp;\""; // result will be an iterator over tuples containing the start and end indices for each match in the string let result = regex.captures_iter(string); for mat in result { println!("{:?}", mat); } }

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 Rust, please visit: https://docs.rs/regex/latest/regex/