apply_filters( ‘the_tags’, string $tag_list, string $before, string $sep, string $after, int $post_id )

User Contributed Notes

1. Skip to note 3 content

   capbussat 3 years ago

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   The_tags receives an html string formed in this way:

   $html = "<a href="http://my_website.local/tag/tag_one/&quot; rel="tag">tag_one</a>, <a href="http://my_website.local/tag/tag_two/&quot; rel="tag">tag_two</a>";

   In order to replace a tag you may use Clase DOMDocument. For example, you can replace all tags using a replacement word. but do not change the tag’s links. A more useful example can replace some tags by an alias or by a translation.

   add_filter( 'the_tags', 'my_filter_the_tags');
   function my_filter_the_tags( $html)
   {
     $dom = new DOMDocument();
     $dom->loadHtml($html);
     $anchors = $dom->getElementsByTagName('a');
     $nb = $anchors->length;
    
     for($pos=0; $pos<$nb; $pos++)
     {
       $anchors->item($pos)->nodeValue = 'any_replacement';
      // check error_log( $anchors->item($pos)->nodeValue); 
     }
      
     $html = $dom->saveHTML();
     return $html;
      
   }

   output is this:

   <a href="http://my_website.local/tag/tag_one/&quot; rel="tag">any_replacement</a>, <a href="http://my_website.local/tag/tag_two/&quot; rel="tag">any_replacement</a>
2. Skip to note 4 content

   capbussat 3 years ago

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   An easiest way to replace the_tags

   add_filter( 'the_tags', 'my_filter_the_tags');
   function my_filter_the_tags( $html)
   {
   	$tags = get_tags();
   	$out = '';
   	foreach ( $tags as $key=>$tag)
           {
               $pos = strpos( $html , $tag->name );
               if (  $pos > 0 ) 
   			{
      
                   $replace = my_tag_translation($tag->name);
                   $out .= '<a href = "'.site_url() .'/tag/' .  $tag->slug . ' " rel="tag" title=""  >' .  $replace . ' ,</a>  ';
              	}
           }
   }