veilleperso / or_target_blank fork watch download tarball
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Description: Wordpress plugin to add target='_blank' to external links
Homepage: http://veilleperso.com
Clone URL: git://github.com/veilleperso/or_target_blank.git
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or_target_blank / or_target_blank.php
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<?
/*
  Plugin Name: Target Blank
  Plugin Author: Olivier Ruffin
  Description: A Wordpress plugin to add a target='_blank' to all post and comments links which are external to the blog
  Version: 1.1
  Author: Olivier Ruffin
  Author URI: http://veilleperso.com
*/
 
define('OR_INTERNAL_LINK', "/^".preg_quote(get_option("siteurl"), "/i")."/");
 
function or_convert_external_link($matches) {
  if (preg_match(OR_INTERNAL_LINK, $matches[2])) return $matches[0];
  else return "<a$matches[1]href=\"$matches[2]\"$matches[3] target=\"_blank\" class=\"external\">";
}
  
function or_external_link($text) {
  // use a target blank on external links
  $pattern = '/<a([^>]*?)href=[\"\'](https*:\/\/.*?)[\"\']([^>]*?)>/i';
  return preg_replace_callback($pattern, 'or_convert_external_link', $text);
}
 
if (!is_feed()) {
  add_filter('comment_text', 'or_external_link', 999);
  add_filter('the_content', 'or_external_link', 999);
  add_filter('get_comment_author_link', 'or_external_link', 999);
}