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

/
/
gmi

Test String

Code Generator

Language

Generated Code

$re = '/ <a id="(.*?)<\/a>/mi'; $str = '{% comment %} Use this template to create the Appian_Release_Notes.md page for each new version of Appian. Any changes to this template should be discussed with the Information Development team. {% endcomment %} New features are described below in detail. Behavior changes, resolved issues, deprecations, and removals are called out their own sections. {% comment %} ### <a id="Example_New_Feature"></a> Example New Feature ### This is a short description of the new feature. Group two or more closely related features using a common section with h4 subsections. Link to associated documentation as shown below (based on the number of links). See also: [Associated Documentation](Associated_Documentation.md) See also: [Associated Documentation](Associated_Documentation.md) and [Associated Documentation](Associated_Documentation.md) See also: [Associated Documentation](Associated_Documentation.md), [Associated Documentation](Associated_Documentation.md), and [Associated Documentation](Associated_Documentation.md) {% endcomment %} ## <a id="User_Interfaces"></a> User Interfaces ## This section describes new features for user interfaces, including Tempo, sites, and embedded interfaces. ### Sites Revolution ### #### <a id="Tempo_Reports_in_Sites"></a> Tempo Reports in Sites ### In addition to task reports, actions and record types, designers can now configure sites to have Tempo reports. Making it easier for sites only users to view and analyze data. <img class="screenshot" src="images/release_notes/SitesTempoReports.png"/> [configure sites with reports](Sites.md#Configure_a_Site_Page). #### <a id="Inline_Task_Management"></a> Inline Task Management ### Task management has improved for users of all Appian user environments. All task management controls for SAIL [tasks](Tasks.md), including save changes, reassign, and reject, have been moved to above the task form. The left-hand navigation bar no longer appears in Tempo when viewing SAIL tasks, allowing task forms to occupy the full page width. These task management controls are now available to [sites](Sites.md) users for the first time. Users of [embedded](Embedded_Interfaces.md) tasks now have the option to save changes to SAIL tasks. <img src="images/release_notes/InlineTaskControls.png" class="screenshot"/> #### <a id="User_Record_in_Sites"></a> User Record in Sites ### We have made it possible for designers to configure the User record and User record links in sites. <img class="screenshot" src="images/release_notes/SitesUserRecord.png"/> #### <a id="User_Profile_in_Sites"></a> User Profile in Sites ### Users can now update their profiles in a site by clicking on their avatar in the header and clicking on the Profile button. <img class="screenshot" src="images/release_notes/SitesUserProfile.png"/> #### Wider Sites ### '; 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