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
Processing...

Test String

Code Generator

Language

Generated Code

use strict; my $str = '</ac:layout-cell></ac:layout-section><ac:layout-section ac:type=\\"two_equal\\"><ac:layout-cell><h4>Deployed Services</h4><table style=\\"line-height: 1.42857;\\"><thead><tr><th><div class=\\"tablesorter-header-inner\\">Component</div></th><th><div class=\\"tablesorter-header-inner\\">Version (click for release notes)</div></th><th><div class=\\"tablesorter-header-inner\\">Deployed on</div></th></tr></thead><tbody><tr><td>fs-newarch-proxy</td><td>3.0.10.86</td><td><p><span>2016/06/15 7:30am</span></p></td></tr><tr><td colspan=\\"1\\">fs-newarch-client-proxy</td><td colspan=\\"1\\">3.0.10.53</td><td colspan=\\"1\\"><span>2016/06/03 1<span>:30pm</span></span></td></tr><tr><td colspan=\\"1\\">fiws-proxy</td><td colspan=\\"1\\"><span>3.0.10.35</span></td><td colspan=\\"1\\"><span>2016/06/03 11:30<span>am</span></span></td></tr><tr><td colspan=\\"1\\">fdsm-ocs-proxy</td><td colspan=\\"1\\">3.0.10.2</td><td colspan=\\"1\\">2016/06/20 12:30pm</td></tr><tr><td colspan=\\"1\\">fs-container</td><td colspan=\\"1\\">1.3.10</td><td colspan=\\"1\\"><span>2016/06/20 4:00pm</span></td></tr><tr><td colspan=\\"1\\">fs-persistence</td><td colspan=\\"1\\">1.0.9</td><td colspan=\\"1\\"><span>2016/04/25 11:30am</span></td></tr><tr><td colspan=\\"1\\">fs-monitoring</td><td colspan=\\"1\\">1.2</td><td colspan=\\"1\\">2016/04/27 11:00am</td></tr><tr><td class=\\"highlight-grey\\" colspan=\\"1\\" data-highlight-colour=\\"grey\\">&nbsp;</td><td class=\\"highlight-grey\\" colspan=\\"1\\" data-highlight-colour=\\"grey\\">&nbsp;</td><td class=\\"highlight-grey\\" colspan=\\"1\\" data-highlight-colour=\\"grey\\">&nbsp;</td></tr><tr><td colspan=\\"1\\">fs-account-maint-2</td><td colspan=\\"1\\">2.12</td><td colspan=\\"1\\"><span>2016/06/20 12:00pm</span></td></tr><tr><td colspan=\\"1\\">fs-account-search-3</td><td colspan=\\"1\\">3.2.9</td><td colspan=\\"1\\"><span>2016/06/08 4:00pm</span></td></tr><tr><td colspan=\\"1\\"><span>fs-account-search-4</span></td><td colspan=\\"1\\"><p>4.12</p></td><td colspan=\\"1\\"><span>2016/06/20 12:00pm</span></td></tr><tr><td colspan=\\"1\\">fs-core-2</td><td colspan=\\"1\\"><span>2.9</span></td><td colspan=\\"1\\"><span>2016/06/20 12:00pm</span></td></tr><tr><td colspan=\\"1\\">fs-fiws-services-2</td><td colspan=\\"1\\">2.18</td><td colspan=\\"1\\"><span>2016/06/20 12:00pm</span></td></tr><tr><td colspan=\\"1\\">fs-memos-1</td><td colspan=\\"1\\"><span>1.82</span></td><td colspan=\\"1\\"><span>2016/06/20 12:00pm</span></td></tr><tr><td colspan=\\"1\\">fs-secureconfig-2</td><td colspan=\\"1\\">2.215</td><td colspan=\\"1\\"><span>2016/06/20 12:00pm</span></td></tr><tr><td colspan=\\"1\\">fs-statements-1</td><td colspan=\\"1\\">1.69</td><td colspan=\\"1\\"><p><span>2016/06/08 11:00am</span></p></td></tr><tr><td colspan=\\"1\\">fs-statements-2</td><td colspan=\\"1\\">2.72</td><td colspan=\\"1\\"><span>2016/06/20 12:00pm</span></td></tr><tr><td colspan=\\"1\\">fs-token-3</td><td colspan=\\"1\\">3.213</td><td colspan=\\"1\\"><span>2016/06/20 12:00pm</span></td></tr><tr><td colspan=\\"1\\">fs-token-4</td><td colspan=\\"1\\">4.216</td><td colspan=\\"1\\">2016/06/22 3:00pm</td></tr><tr><td colspan=\\"1\\">fs-ui-services-2</td><td colspan=\\"1\\">2.9</td><td colspan=\\"1\\"><span>2016/06/20 12:00pm</span></td></tr><tr><td class=\\"highlight-grey\\" colspan=\\"1\\" data-highlight-colour=\\"grey\\">&nbsp;</td><td class=\\"highlight-grey\\" colspan=\\"1\\" data-highlight-colour=\\"grey\\">&nbsp;</td><td class=\\"highlight-grey\\" colspan=\\"1\\" data-highlight-colour=\\"grey\\">&nbsp;</td></tr><tr><td colspan=\\"1\\">fs-web</td><td colspan=\\"1\\">2.0.11</td><td colspan=\\"1\\">2016/06/22 12:30pm</td></tr><tr><td>fs-ui</td><td>1.0.0-SNAPSHOT</td><td>&nbsp;</td></tr><tr><td colspan=\\"1\\">fs-swagger-ui</td><td colspan=\\"1\\">0.0.2</td><td colspan=\\"1\\">2016/03/08 4:56pm</td></tr></tbody> '; my $regex = qr/(?<="value":")(.*?)(?=",)/p; if ( $str =~ /$regex/ ) { 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