Regular Expressions 101

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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 = '/\s+\d+\s+/m'; $str = '1 Jefferson Poirot 72 Cian Healy 82 2 Guilhem Guirado 78 Rory Best 85 3 Rabah Slimani Tadhg Furlong 85 4 Arthur Iturria 82 Iain Henderson 84 5 Sebastien Vahaamahina 84 James Ryan 92 6 Wenceslas Lauret 82 Peter O\'Mahony 93 7 Yacouba Camara 70 Josh van der Flier 64 8 Kevin Gourdon CJ Stander 91 9 Maxime Machenaud Conor Murray 87 10 Matthieu Jalibert Johnny Sexton 90 11 Virimi Vakatawa Jacob Stockdale 89 12 Henry Chavancy Bundee Aki 83 13 Rémi Lamerat Robbie Henshaw 78 14 Teddy Thomas Keith Earls 89 15 Geoffrey Palis Rob Kearney 80 Substitutes # FRA France RPI IRE Ireland RPI 16 Adrien Pelissie Sean Cronin 84 17 Dany Priso 70 Jack McGrath 70 18 Cedate Gomes Sa 71 John Ryan 86 19 Paul Gabrillagues 77 Devin Toner 90 20 Marco Tauleigne Dan Leavy 80 21 Antoine Dupont 92 Luke McGrath 22 Anthony Belleau 65 Joey Carbery 86 23 Benjamin Fall Fergus McFadden'; preg_match_all($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