Plugin Directory

!This plugin hasn’t been updated in over 2 years. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

Auto-hyperlink URLs

Version: 4.0 Automatically hyperlink text URLs and email addresses originally written only as plaintext.


  • Re-implementation by extending C2C_Plugin_025, which among other things adds support for:
    • Reset of options to default values
    • Better sanitization of input values
    • Offload of core/basic functionality to generic plugin framework
    • Additional hooks for various stages/places of plugin operation
    • Easier localization support
  • Add c2c_test_autohyperlink_urls() to run suite of tests (currently 61 tests)
  • Full localization support
  • Improve text link detection
  • Move autohyperlink_truncate_link() to c2c_autohyperlink_truncate_link()
  • Deprecate autohyperlink_truncate_link(), but retain it (for now) for backwards compatibility
  • Move autohyperlink_link_urls() to c2c_autohyperlink_link_urls()
  • Deprecate autohyperlink_link_urls(), but retain it (for now) for backwards compatibility
  • Add second argument to c2c_autohyperlink_link_urls() and class method hyperlink_urls() to allow override of plugin settings
  • Ensure URLs get escaped prior to use in href attribute
  • Fix bug that prevented proper link truncation
  • Rename class from 'AutoHyperlinkURLs' to 'c2c_AutoHyperlinkURLs'
  • Wrap global functions in if(!function_exists()) checks
  • Explicitly declare class functions public
  • Save a static version of itself in class variable $instance
  • Deprecate use of global variable $autohyperlink_urls to store instance
  • In global space functions: use new class instance variable to access instance instead of using global
  • Note compatibility with WP 3.0+, 3.1+, 3.2+
  • Drop compatibility with versions of WP older than 3.0
  • Add 'Text Domain' header tag
  • Add screenshot
  • Add .pot file
  • Code reformatting (spacing)
  • Add PHPDoc documentation
  • Add package info to top of plugin file
  • Remove docs from top of plugin file (all that and more are in readme.txt)
  • Remove trailing whitespace in header docs
  • Update copyright date (2011)
  • Add Template Tags, Filters, and Upgrade Notice sections to readme.txt

3.5 (unreleased)

  • NEW:
  • Extract functionality into clearly defined, single-tasked, and filterable functions
    • Add get_class() with filter 'autohyperlink_urls_class' to filter class assigned to auto-hyperlinks (default is 'autohyperlink')
    • Add get_link_attributes() with filter 'autohyperlink_urls_link_attributes' to filter all attributes for auto-hyperlink
    • Add get_tlds() with filter 'autohyperlink_urls_tlds' to filter TLDs recognized by the plugin (a '|' separated string of tlds)
  • Add filter 'autohyperlink_urls_truncate_link' to truncate_link() to facilitate customized link truncation
  • Add strip_protocol setting to control if protocol should be stripped from auto-hyperlinks
  • Add 'Settings' link to plugin's plugin listing entry
  • Add Changelog to readme.txt
  • Move all global functions into class (except autohyperlink_truncate_link() and autohyperlink_link_urls(), which are now just single argument proxies to classed versions)
  • Rewrite significant portions of all regular expressions
  • Add hyphen to settings link text
  • truncate_link() and hyperlink_urls() now pass arguments inline instead of setting temporary variables
  • Memoize options in class
  • Add class variable 'plugin_basename', which gets initialized in constructor, and use it instead of hardcoded path
  • Update to current admin page markup conventions
  • Improve options handling
  • Add logo to settings page
  • Minor reformatting
  • Note compatibility through WP2.8+
  • Drop support for versions of WP older than 2.6
  • Change description
  • Update copyright date
  • Update screenshot
  • FIXED:
  • Change pattern matching code for email addresses to allow for emails to be preceded by non-space characters
  • Change pattern matching code for all auto-hyperlinking to better prevent linking a link within tag attributes
  • Use plugins_url() instead of hardcoded path


  • Overhauled and added a bunch of new code
  • Encapsulated a majority of functionality in a class
  • Added admin options page for the plugin, under Options -> Autohyperlink (or in WP 2.5: Settings -> Autohyperlink)
  • Added options so that default auto-hyperlinking can be easily configured
  • Added option to allow for user-specified TLDs
  • Added TLDs of mil, mobi, and cc
  • Added option to conditionally auto-hyperlink comments
  • Renamed existing functions
  • "~" is a valid URL character
  • Added class of "autohyperlink" to all links created by the plugin
  • Removed the A-Z from regexp since they are case-insensitive
  • Recoded some of the core functionality so as to execute only one preg_replace() call for everything (by passing patterns and replacements as arrays)
  • Added a note about the known issue of the plugin linking URLs that appear within a longer string in a tag attribute's value
  • trim() text before return instead of doing a substr()
  • Added nofollow support
  • Moved Class B domain preg to after explicitly protocoled links
  • Tweaked description and installation instructions
  • Updated copyright date and version to 3.0
  • Added readme.txt and screenshot image to distribution zip
  • Tested compatibility with WP 2.3+ and 2.5


  • Fix to once again prevent linking already hyperlinked URL


  • Plaintext URLs can now begin, end, or be all of the post and it will get auto-hyperlinked
  • Incorporated some WP1.3 regular expression changes to make_clickable()
  • Added “gov” and “edu” to the list of common domain extensions (for Class B domain support)
  • No longer displays the protocol (the “http://” part) in the displayed link text
  • Dropped support for auto-linking aim: and icq:
  • Prepended function names with “c2c_”to avoid potential future conflict with other plugins or the WordPress core
  • Changed license from BSD-new to MIT


  • Slight tweak to prevent http://blah from becoming a link


  • Complete rewrite


  • Initial release

Requires: 3.0 or higher
Compatible up to: 3.2.1
Last Updated: 5 years ago
Active Installs: 8,000+


4.8 out of 5 stars


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