Expanding the allowed HTML tags in comments?

3 comments

1. The tags that are allowed in comments are stored in the $allowedtags global variable. You can try adding elements to that list (the key is the tag name, the value is an array of allowed attributes). If you have problems with the timing you can play with the CUSTOM_TAGS global variable.

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2. I too needed to customise the list of available HTML tags in comments. I didn’t want to define the CUSTOM_TAGS variable because it overrides everything that WP sets up in kses.php, but I wasn’t sure where to hook the function. A little investigation showed that kses.php initialises its filters via kses_init() which is added as a function to ‘init’ with the default priority of 10, so…

   /*
    * customise list of allowed HTML tags in comments
    */
   function gregory_customise_allowedTags() {
   
       global $allowedtags;
   
       // remove unwanted tags
       $unwanted = array(
           'abbr',
           'acronym',
           'blockquote',
           'cite',
           'code',
           'del',
           'strike',
           'strong'
           );
       foreach ( $unwanted as $tag )
           unset( $allowedtags[$tag] );
   
       // add wanted tags
       $newTags = array(
           'span' => array(
               'lang' => array()),
           'u' => array()
           );
       $allowedtags = array_merge( $allowedtags, $newTags );
   
   }
   
   add_action('init', 'gregory_customise_allowedTags', 11 );
   

   Reference:

   • /wp-includes/kses.php
   • Look at the first section where $allowedtags is defined.
   • Look at kses_init() and its accompanying add_action commands.

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3. Just more exmple :

   function allow_tags_content() {
       global $allowedposttags, $allowedtags;
   
       $allowedposttags['div']['data-hello'] = true;
       $allowedtags['div']['data-hello'] = true;
   
       $allowedposttags['div']['data-world'] = true;
       $allowedtags['div']['data-world'] = true;
   }
   add_action('init','allow_tags_content');
   

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