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 = 'curl \'https://i-tools.cys.com/api/v1/places/nearby?latitude=-6.30491801&longitude=106.6861089&radius_in_km=0.5&providers=internaltopv2&limit=10&msg_id=aa0cabd1-db82-11ea-af17-1d5f5xxxxx\' \\ -H \'authority: i-tools.cys.com\' \\ -H \'accept: application/json, text/plain, */*\' \\ -H \'authorization: axZhbGciOiJSUzI1NiIsImtpZCI6Il9kZWZhdWx0IiwidHlwIjoiSldUIn0.eyJhdWQiOiJHRU8tVE9PTFMiLCJleHAiOjE2MDgxMDgxNDYsImlhdCI6MTYwODAyMTc0MywianRpIjoiNDA2NjI5NzgtN2RmMS00MDE5LThjZTktMTZkMTFlMjY4NmYyIiwibG1lIjoiR09PR0xFVjMiLCJuYW1lIjoiIiwic3ViIjoiNWU1ZWQyM2YtNGRkMi00YmY3LThkNTEtZGM0MzY0NDdmNzg5In0.IXBubd0NrCaVEyrnaskH4CO50nP5qLz-6G02IBpy0vnPAjHcFeLd4OdocN2TinuBiK_LtgIfIgLCOJx_A3hsNCqnAbIRKfKV6b7xO7HSLNXIT3PS8iAy_z2I5bW4-hUcKJkrMJcgHA8j2bBZGlAPaDf6PkjdzFM7M0P_kXk5H_zKyO2prAQA-eh3UYUr22PLptLsusWMAfXFGf42eUoNz6gq8KKWzaO0wc7FqrYD-rLz50xDMuwLS9J-su4TzIhpJgaMKq8rIvNyy5nAs-77IhG_foaIelVY6ZGFgUe_dvq0Ox9JrR8tqLV7kRwMf7EAIgbdKN-Xxu8ZbulhhuxNZA\' ^ -H \'i-tools-params: {"client_version":"v11.0.1xxxx"}\' \\ -H \'user-agent: Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Mobile Safari/537.36\' \\ -H \'x-app-identity: i_tools\' \\ -H \'origin: https://i-tools.cys.net\' \\ -H \'sec-fetch-site: cross-site\' \\ -H \'sec-fetch-mode: cors\' \\ -H \'sec-fetch-dest: empty\' \\ -H \'referer: https://i-tools.cys.net/ops-tools/place-nearby-v2\' \\ -H \'accept-language: id-ID,id;q=0.9,en-US;q=0.8,en;q=0.7\' \\ --compressed'; my $regex = qr/authorization:\s(.*)\s\^/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