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

use strict; my $str = 'Ein Text nach entsprechend dem din-91379.datatypeC!'; my $regex = qr/([ - ]| |[ -~]|[ -¬]|[®-ž]|[Ƈ-ƈ]|Ə|Ɨ|[Ơ-ơ]|[Ư-ư]|Ʒ|[Ǎ-ǜ]|[Ǟ-ǟ]|[Ǣ-ǰ]|[Ǵ-ǵ]|[Ǹ-ǿ]|[Ȓ-ȓ]|[Ș-ț]|[Ȟ-ȟ]|[ȧ-ȳ]|ə|ɨ|ʒ|[ʹ-ʺ]|[ʾ-ʿ]|ˈ|ˌ|[Ḃ-ḃ]|[Ḇ-ḇ]|[Ḋ-ḑ]|[Ḝ-ḫ]|[ḯ-ḷ]|[Ḻ-ḻ]|[Ṁ-ṉ]|[Ṓ-ṛ]|[Ṟ-ṣ]|[Ṫ-ṯ]|[Ẁ-ẇ]|[Ẍ-ẗ]|ẞ|[Ạ-ỹ]|’|‡|€|A̋|C(̀|̄|̆|̈|̕|̣|̦|̨̆)|D̂|F(̀|̄)|G̀|H(̄|̦|̱)|J(́|̌)|K(̀|̂|̄|̇|̕|̛|̦|͟H|͟h)|L(̂|̥|̥̄|̦)|M(̀|̂|̆|̐)|N(̂|̄|̆|̦)|P(̀|̄|̕|̣)|R(̆|̥|̥̄)|S(̀|̄|̛̄|̱)|T(̀|̄|̈|̕|̛)|U̇|Z(̀|̄|̆|̈|̧)|a̋|c(̀|̄|̆|̈|̕|̣|̦|̨̆)|d̂|f(̀|̄)|g̀|h(̄|̦)|j́|k(̀|̂|̄|̇|̕|̛|̦|͟h)|l(̂|̥|̥̄|̦)|m(̀|̂|̆|̐)|n(̂|̄|̆|̦)|p(̀|̄|̕|̣)|r(̆|̥|̥̄)|s(̀|̄|̛̄|̱)|t(̀|̄|̕|̛)|u̇|z(̀|̄|̆|̈|̧)|Ç̆|Û̄|ç̆|û̄|ÿ́|Č(̕|̣)|č(̕|̣)|Ī́|ī́|Ž(̦|̧)|ž(̦|̧)|Ḳ̄|ḳ̄|Ṣ̄|ṣ̄|Ṭ̄|ṭ̄|Ạ̈|ạ̈|Ọ̈|ọ̈|Ụ(̄|̈)|ụ(̄|̈))*/mp; if ( $str =~ /$regex/g ) { print "Whole match is ${^MATCH} and its start/end positions can be obtained via \$-[0] and \$+[0]\n"; # print "Capture Group 1 is $1 and its start/end positions can be obtained via \$-[1] and \$+[1]\n"; # print "Capture Group 2 is $2 ... and so on\n"; } # ${^POSTMATCH} and ${^PREMATCH} are also available with the use of '/p' # Named capture groups can be called via $+{name}

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