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

/
/
gm

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @".+\/+(\d+).+?psd"; string input = @"!Gotovoe Anya/а шарик летит/700.psd !Gotovoe Anya/​С 5 до 7. Время любовников (Сурдоперевод)/4478751.psd !Gotovoe Anya/#вмаскешоу/8115515.psd !Gotovoe Anya/#Гуднайтшоу/3627751.psd !Gotovoe Anya/#Гуднайтшоу/3627751_RU.psd !Gotovoe Anya/#ЛавСтайл/3086771-lavstayl.psd !Gotovoe Anya/#яздесь/4572015.psd !Gotovoe Anya/#ЯЗДЕСЬ/6925565.psd !Gotovoe Anya/(Не)идеальная женщина/10010315.psd !Gotovoe Anya/... а шарик летит/700.psd !Gotovoe Anya/@Жених/5851405.psd !Gotovoe Anya/«V» значит Вендетта/2457401.psd !Gotovoe Anya/«Весёлые» каникулы/1341041.psd !Gotovoe Anya/«Вне игры. Пролог». Документальный фильм/4460771.psd !Gotovoe Anya/«Кедр» пронзает небо/1193411.psd !Gotovoe Anya/«Мерседес» уходит от погони/15380.psd !Gotovoe Anya/«Посейдон» спешит на помощь/1684351.psd !Gotovoe Anya/«Старый» Новый год/2454371-staryy-novyy-god.psd !Gotovoe Anya/«Сто грамм» для храбрости/1363311.psd !Gotovoe Anya/«Тигры» на льду/2312_RU.psd !Gotovoe Anya/0 в пользу Танечки/2391.psd !Gotovoe Anya/1/2930981.psd !Gotovoe Anya/1+1 (Сурдоперевод)/2681801.psd !Gotovoe Anya/1+1 дома 8 марта/2474581.psd !Gotovoe Anya/1+1 дома 8 марта/2474581-1-1-doma-8-marta-2.psd !Gotovoe Anya/1+1/2214021.psd !Gotovoe Anya/2 Brothers On The 4Th Floor - караоке/10307755.psd !Gotovoe Anya/2 дня/95161.psd"; RegexOptions options = RegexOptions.Multiline; foreach (Match m in Regex.Matches(input, pattern, options)) { Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index); } } }

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 C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx