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

/
/
gmi

Test String

Code Generator

Language

Generated Code

$re = '/http:\/\/seluws1215\/PM2\/flex\/ProcessManager(?:Flex)?\.(?:php|html)\?#?(?:v=\d*&)?\w*=(\d*)/mi'; $str = 'http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=12932 http://seluws1215/pm2/flex/ProcessManagerFlex.php http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=13179 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=15032 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=15121 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=16452 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=13018 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=15568 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=15568 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=7056 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=16283 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=16283 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=16929 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=15587 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=16394 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=18585 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=17532 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=18292 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=18461 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=18848 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=18461 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=18461 http://seluws1215/pm2/flex/ProcessManagerFlex.php?start=20177 http://seluws1215/pm2/flex/ProcessManager.php?start=20551 http://seluws1215/pm2/flex/ProcessManager.php?start=20423 http://seluws1215/pm2/flex/ProcessManager.php?start=18613 http://seluws1215/pm2/flex/ProcessManager.php?start=20870 http://seluws1215/pm2/flex/ProcessManager.php?start=17747 http://seluws1215/pm2/flex/ProcessManager.php?start=12930 http://seluws1215/pm2/flex/ProcessManager.php?start=21032 http://seluws1215/pm2/flex/ProcessManager.php?start=20551 http://seluws1215/pm2/flex/ProcessManager.php?start=17531 http://seluws1215/pm2/flex/ProcessManager.php?start=21283 http://seluws1215/pm2/flex/ProcessManager.php?start=16929 http://seluws1215/pm2/flex/ProcessManager.php?start=20804 http://seluws1215/pm2/flex/ProcessManager.php?start=24585 http://seluws1215/pm2/flex/ProcessManager.php?start=23807 http://seluws1215/pm2/flex/ProcessManager.php?start=21795 http://seluws1215/pm2/flex/ProcessManager.php?start=24569 http://seluws1215/pm2/flex/ProcessManager.php?start=24879 http://seluws1215/pm2/flex/ProcessManager.php?start=24884 http://seluws1215/pm2/flex/ProcessManager.php?start=24884 http://seluws1215/pm2/flex/ProcessManager.php?start=20898 http://seluws1215/pm2/flex/ProcessManager.php?start=24884 http://seluws1215/pm2/flex/ProcessManager.php?start=24884 http://seluws1215/pm2/flex/ProcessManager.php?start=25769 http://seluws1215/pm2/flex/ProcessManager.php?start=24410 http://seluws1215/pm2/flex/ProcessManager.php?start=24734 http://seluws1215/pm2/flex/ProcessManager.php?start=25812 http://seluws1215/pm2/flex/ProcessManager.php?start=21143 http://seluws1215/pm2/flex/ProcessManager.php?start=24395 http://seluws1215/pm2/flex/ProcessManager.php?start=25890 http://seluws1215/pm2/flex/ProcessManager.php?start=25890 http://seluws1215/pm2/flex/ProcessManager.php?start=25890 http://seluws1215/pm2/flex/ProcessManager.php?start=25890 http://seluws1215/pm2/flex/ProcessManager.php?start=25890 http://seluws1215/pm2/flex/ProcessManager.php?start=14869 http://seluws1215/pm2/flex/ProcessManager.php?start=20777 http://seluws1215/pm2/flex/ProcessManager.php?start=25819 http://seluws1215/pm2/flex/ProcessManager.php?start=25819 http://seluws1215/pm2/flex/ProcessManager.php?start=21735 http://seluws1215/pm2/flex/ProcessManager.php?start=26842 http://seluws1215/pm2/flex/ProcessManager.php?start=26842 http://seluws1215/pm2/flex/ProcessManager.php?start=27084 http://seluws1215/pm2/flex/ProcessManager.php?start=23271 http://seluws1215/pm2/flex/ProcessManager.php?start=27067 http://seluws1215/pm2/flex/ProcessManager.php?start=25954 http://seluws1215/pm2/flex/ProcessManager.php?start=18409 http://seluws1215/pm2/flex/ProcessManager.php?start=21659 http://seluws1215/pm2/flex/ProcessManager.php?start=18585 http://seluws1215/pm2/flex/ProcessManager.php?start=21208 http://seluws1215/pm2/flex/ProcessManager.php?start=28335 http://seluws1215/pm2/flex/ProcessManager.php?start=24395 http://seluws1215/pm2/flex/ProcessManager.php?start=24863 http://seluws1215/pm2/flex/ProcessManager.php?start=27054 http://seluws1215/pm2/flex/ProcessManager.php?start=26842 http://seluws1215/pm2/flex/ProcessManager.php?start=26842 http://seluws1215/pm2/flex/ProcessManager.php?start=18585 http://seluws1215/pm2/flex/ProcessManager.php?start=28340 http://seluws1215/pm2/flex/ProcessManager.php?start=28948 http://seluws1215/pm2/flex/ProcessManager.php?start=29035 http://seluws1215/pm2/flex/ProcessManager.php?start=28927 http://seluws1215/pm2/flex/ProcessManager.php?start=26352 http://seluws1215/pm2/flex/ProcessManager.php?start=26361 http://seluws1215/pm2/flex/ProcessManager.php?start=29021 http://seluws1215/pm2/flex/ProcessManager.php?start=29189 http://seluws1215/pm2/flex/ProcessManager.php?start=29189 http://seluws1215/pm2/flex/ProcessManager.php?start=29719 http://seluws1215/pm2/flex/ProcessManager.php?start=29626 http://seluws1215/pm2/flex/ProcessManager.php?start=296229 http://seluws1215/pm2/flex/ProcessManager.php?start=29743 http://seluws1215/pm2/flex/ProcessManager.php?start=27244 http://seluws1215/pm2/flex/ProcessManager.php?start=29953 http://seluws1215/pm2/flex/ProcessManager.php?start=21771 http://seluws1215/pm2/flex/ProcessManager.php?start=28340 http://seluws1215/pm2/flex/ProcessManager.php?start=21710 http://seluws1215/pm2/flex/ProcessManager.php?start=27138 http://seluws1215/pm2/flex/ProcessManager.php?start=27624 http://seluws1215/pm2/flex/ProcessManager.php?start=28238 http://seluws1215/pm2/flex/ProcessManager.php?start=23275 http://seluws1215/pm2/flex/ProcessManager.php?start=24410 http://seluws1215/pm2/flex/ProcessManager.php?start=30508 http://seluws1215/pm2/flex/ProcessManager.php?start=30508 http://seluws1215/pm2/flex/ProcessManager.php?start=18848 http://seluws1215/pm2/flex/ProcessManager.php?start=30234 http://seluws1215/pm2/flex/ProcessManager.php?start=30223 http://seluws1215/pm2/flex/ProcessManager.php?start=30239 http://seluws1215/pm2/flex/ProcessManager.php?start=30242 http://seluws1215/pm2/flex/ProcessManager.php?start=30260 http://seluws1215/pm2/flex/ProcessManager.php?start=24213 http://seluws1215/pm2/flex/ProcessManager.php?start=24214 http://seluws1215/pm2/flex/ProcessManager.php?start=27027 http://seluws1215/pm2/flex/ProcessManager.php?start=7056 http://seluws1215/pm2/flex/ProcessManager.php?start=27069 http://seluws1215/pm2/flex/ProcessManager.php?start=24410 http://seluws1215/pm2/flex/ProcessManager.php?start=24410 http://seluws1215/pm2/flex/ProcessManager.php?start=30622 http://seluws1215/pm2/flex/ProcessManager.php?start=28658 http://seluws1215/pm2/flex/ProcessManager.php?start=25954 http://seluws1215/pm2/flex/ProcessManager.php?start=18543 http://seluws1215/pm2/flex/ProcessManager.php?start=12829 http://seluws1215/pm2/flex/ProcessManager.php?start=24762 http://seluws1215/pm2/flex/ProcessManager.php?start=26657 http://seluws1215/pm2/flex/ProcessManager.php?start=29163 http://seluws1215/pm2/flex/ProcessManager.php?start=31123 http://seluws1215/pm2/flex/ProcessManager.php?start=20551 http://seluws1215/pm2/flex/ProcessManager.php?start=31149 http://seluws1215/pm2/flex/ProcessManager.php?start=31162 http://seluws1215/pm2/flex/ProcessManager.php?start=29882 http://seluws1215/pm2/flex/ProcessManager.php?start=7057 http://seluws1215/pm2/flex/ProcessManager.php?start=17329 http://seluws1215/pm2/flex/ProcessManager.php?start=29961 http://seluws1215/pm2/flex/ProcessManager.php?start=17049 http://seluws1215/pm2/flex/ProcessManager.php?start=17329 http://seluws1215/pm2/flex/ProcessManager.php?start=31243 http://seluws1215/pm2/flex/ProcessManager.php?start=31243 http://seluws1215/pm2/flex/ProcessManager.php?start=30292 http://seluws1215/pm2/flex/ProcessManager.php?start=27624 http://seluws1215/pm2/flex/ProcessManager.php?start=20895 http://seluws1215/pm2/flex/ProcessManager.php?start=20895 http://seluws1215/pm2/flex/ProcessManager.php?start=16385 http://seluws1215/pm2/flex/ProcessManager.php?start=14984 http://seluws1215/pm2/flex/ProcessManager.php?start=31841 http://seluws1215/pm2/flex/ProcessManager.php?start=21735 http://seluws1215/pm2/flex/ProcessManager.php?start=31840 http://seluws1215/pm2/flex/ProcessManager.php?start=31847 http://seluws1215/pm2/flex/ProcessManager.php?start=31864 http://seluws1215/pm2/flex/ProcessManager.php?start=14384 http://seluws1215/pm2/flex/ProcessManager.php?start=23271 http://seluws1215/pm2/flex/ProcessManager.php?start=24534 http://seluws1215/pm2/flex/ProcessManager.php?start=27145 http://seluws1215/pm2/flex/ProcessManager.php?start=32265 http://seluws1215/pm2/flex/ProcessManager.php?start=20728 http://seluws1215/pm2/flex/ProcessManager.php?start=6858 http://seluws1215/pm2/flex/ProcessManager.php?start=28942 http://seluws1215/pm2/flex/ProcessManager.php?start=26466 http://seluws1215/pm2/flex/ProcessManager.php?start=28942 http://seluws1215/pm2/flex/ProcessManager.php?start=28942 http://seluws1215/pm2/flex/ProcessManager.php?start=30292 http://seluws1215/pm2/flex/ProcessManager.php?start=23298 http://seluws1215/pm2/flex/ProcessManager.php?start=32307 http://seluws1215/pm2/flex/ProcessManager.php?start=12930 http://seluws1215/pm2/flex/ProcessManager.php?start=30543 http://seluws1215/pm2/flex/ProcessManager.php?#page=16384 http://seluws1215/pm2/flex/ProcessManager.php?#page=17104 http://seluws1215/pm2/flex/ProcessManager.php?#page=16384 http://seluws1215/pm2/flex/ProcessManager.php?start=32306 http://seluws1215/pm2/flex/ProcessManager.php?start=28948 http://seluws1215/pm2/flex/ProcessManager.php?start=16384 http://seluws1215/pm2/flex/ProcessManager.php?start=32166 http://seluws1215/pm2/flex/ProcessManager.php?start=26266 http://seluws1215/pm2/flex/ProcessManager.php?start=17016 http://seluws1215/pm2/flex/ProcessManager.php?start=7093 http://seluws1215/pm2/flex/ProcessManager.php?start=29866 http://seluws1215/pm2/flex/ProcessManager.php?start=20551 http://seluws1215/pm2/flex/ProcessManager.php?start=20728 http://seluws1215/pm2/flex/ProcessManager.php?start=20856 http://seluws1215/pm2/flex/ProcessManager.php?start=26228 http://seluws1215/pm2/flex/ProcessManager.php?start=32265 http://seluws1215/pm2/flex/ProcessManager.php?start=27145 http://seluws1215/pm2/flex/ProcessManager.php?start=13237 http://seluws1215/pm2/flex/ProcessManager.php?start=32711 http://seluws1215/pm2/flex/ProcessManager.php?start=32306 http://seluws1215/pm2/flex/ProcessManager.php?start=31342 http://seluws1215/pm2/flex/ProcessManager.php?start=33648'; 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