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

Substitution

Processing...

Code Generator

Language

Generated Code

use strict; my $str = 'Copiez votre liste d\'auteur ici. Elle doit être sous la forme Bennett, Elena M. and Baird, Julia and Baulch, Helen and Chaplin-Kramer, Rebecca and Fraser, Evan and Loring, Phil and Morrison, Peter and Parrott, Lael and Sherren, Kate and Winkler, Klara J. and Cimon-Morin, Jérôme and Fortin, Marie-Josée and Kurylyk, Barret L. and Lundholm, Jeremy and Poulin, Monique and Rieb, Jesse T. and Gonzalez, Andrew and Hickey, Gordon M. and Humphries, Murray and Krishna {Bahadur KC} and Lapen, David Certain prénoms composés (ici Ruel, Jean-Claude) doivent être terminé à l\'aide du deuxième outil: '; my $regex = qr/(?<=,\s*)(?:([A-Z])\.?[a-üA-Z{\\'}]*(?:(-)| )?)(?:([A-Z])(\.?)[a-üa-zA-Z{\\'}]*(?:(-)| )?)?(?:([A-Z])(\.)?[a-zA-Z{\\'}]*(?:(-)| )?)?(?= and|$)/mp; my $subst = '$1.$2$3$4$5$6$7'; my $result = $str =~ s/$regex/$subst/rg; print "The result of the substitution is' $result\n";

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 Perl, please visit: http://perldoc.perl.org/perlre.html