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

r"
"
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#"^\"([^((,\")|(\",))]*)\"|,\"([^((,\")|(\",))]*)\" "#).unwrap(); let string = "\"0213379\",\"P\",\"2014\",,\"\",\"2015\",\"2015\",\"95BAD1D8\",\"Macan S Diesel 18\" Räder\",\"951\",\"4T4T\",\"VO\",\"$BI 0M2 0NA 0TD 1BK 1G1 1N3 2JX 2ZH 4A3 6H1 7X2 8JE 9JB C11 PE5 PP8 QE1 QJ6 VR4\",\"B\",\"\",\"1510\",\"\",\"\",\"\",\"\",\"\",\"2014-06-04 00:00:00\",\"\",\"2014-06-04 00:00:00\",\"2014-06-06 00:00:00\",\"\",\"V\",\"K\",\"N\",\"N\",\"N\",\"2014-06-04 00:00:00\",\"\",\"\",\"400\",\"400\",\"J\",\"PIA GRAZ-L\",\"400\",\"PIA GRAZ-L\",\"\",\"\",\"56193.72\",\"63139.01\",\"96\",\"2014-06-04 00:00:00\",\"M\",\"\",\"Walter Josef\",\"Müller\",\"A\",\"8530\",\"Deutschlandsberg\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"Feilhofengasse 8\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"Herr\",\"\",\"Rabel\",\"Rene\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"2015\",\"03\",\"OR\",\"OR\",\"\",\"258\",\"190\",\"2967\",\"D\",\"4\",\"PDK\",\"A\",\"14\",\"6.7\",\"5.7\",\"6.1\",\"161\",\".0002\",\"J\",\".0582\",\"\",\"\",\"\",\"\""; // 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/