Execute PHP in Category/Tag description

2 comments

1. By Default when category_description() gets called, it is filtered by code.
   But I suggest you to remove filter by adding them in functions.php of theme. Try something like this. I use it for html tags

   remove_filter( 'pre_term_description', 'wp_filter_kses' );
   remove_filter( 'term_description', 'wp_kses_data' ); 
   

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2. The easiest way, without headaches, is to use a shortcode and send all variables as attributes, like:

   Description of the category: [php var1=”33″ var2=”string” var3=”array&array&array”]shortcode content[/php].

   And then parse all the $atts and content doing any PHP you want. To enable shortcodes in the category description, use:

   add_filter( 'category_archive_meta', function( $content ){
       return apply_filters( 'the_content', $content );
   });
   

   A test shortcode:

   add_shortcode( 'php', function( $atts, $content ){
       return sprintf( 
           "<pre><code>%snn%s</code></pre>", 
           $content, 
           print_r( $atts, true ) 
       );
   });
   

   And the result using the sample description above:

   

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