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

/
/
gmU

Test String

Code Generator

Language

Generated Code

$re = '/function(.|\n)*{(.|\n)*if(.|\n)*function /mU'; $str = ' onRenderComplete: function () { pageData.orderingAll = viewModel.tabAllGrid.getOrdering(); if (app.session.features.openNotesAndMessagesFromList_VEA14870) { $(\'#tabAllGrid .connectedMessageIcon\').on(\'click\', function (e) { var $messages = $(e.target), $row = $messages.parents(\'.gridRow\'), rowId = $row.data(\'row\'), rowData = $(\'#tabAllGrid\').vismaGrid(\'getRowData\', rowId); postItMessageModal(rowData); }); function postItMessageModal(data) { var documentType = null; var documentId = null; var urls = data.invoiceUrl.split(\'/\'); if (urls.length > 3 && urls[3]) { documentType = urls[2]; var guidRegex = /^[{]?[0-9a-fA-F]{8}[-]?([0-9a-fA-F]{4}[-]?){3}[0-9a-fA-F]{12}[}]?$/; if (urls[3].match(guidRegex)) { documentId = urls[3]; } else { documentId = urls[4]; } } app.shell.viewModel.commentViewModel.getMessagesForGivenDocument(documentType, documentId, false, true); }; } }, initialSelected: initialSelectedAll };'; 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