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

$re = '/^\b[A-Z0-9._%+-]+\.?[a-zA-Z]{3}\.?[a-zA-Z]{4}\.?\d{2}\t\t[0-9:]{11}\t(\d{1})\t\b[A-Z0-9._%+-]+\t(\d{2,3})\t(\d{3})\t(\d{1,2})\t([*]?)\t(\w{1})\t\t\d{1}\t[0-9:]{11}\t[0-9:]{11}\t\b[A-Z0-9._%+-]+\.?[a-zA-Z]{3}\t\b[A-Z0-9._%+-]+[0-9]{2}\t.+\t([0-9]{1,2})\t\t([0-9]{3})\t\t.+\t\t\n/m'; $str = 'A135C001_130101_R0BF.mov.sync.01 13:22:56:11 2 A135C001_130101_R0BF 59 806 1 A 2 13:18:35:03 00:04:21:08 A135C001_130101_R0BF.mov A135C001_130101_R0BF 25000 0 1800 1068 ARRI A135C001_130101_R0BF.mov '; preg_match_all($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