I use some "heavy duty" plugging, like syntaxhighlighter, GD star rating etc. i create a de-register.php file which i use to deregister scripts and styles whenever they are not used.


add_action( 'wp_print_styles', 'my_deregister_styles', 100 );
function my_deregister_styles() {

    if (is_home()) {



In this page i have about 200 lines since i am de-registering the css and js files of 5 plugins (or so) when ever they are not being used.

For that end i created some checkbox metaboxes in each post where i can click and say "i use rating here" (for example).

My question is.
Is my way wrong? Does the whole process of using wp_deregister_style and wp_deregister_script defeats the purpose?

Does the actual use of those actions slows my site down? Is there a better way to only use plugins and the styles and scripts they come with when i need them and only then?

I have of course read and searched but couldn't find anything else.
Would love to hear of any solution you think might fit.

1 Answer 1


I assume that you want to activate a plugin only when it is necessary. There is a better option to do this. You can activate the whole plugin upon a certain action. I have provided a example code that will help you achieve what you are looking for and if you have any more queries you can put a comment. If it works for you can accept the answer.

function run_activate_plugin( $plugin ) {
     $current = get_option( 'active_plugins' );
     $plugin = plugin_basename( trim( $plugin ) );

         if ( !in_array( $plugin, $current ) ) {
           $current[] = $plugin;
           sort( $current );
           do_action( 'activate_plugin', trim( $plugin ) );
           update_option( 'active_plugins', $current );
           do_action( 'activate_' . trim( $plugin ) );
           do_action( 'activated_plugin', trim( $plugin) );

         return null;
         run_activate_plugin( 'akismet/akismet.php' );
  • i have to do some testing ;) I am trying to lower the load time - and trying to asertaine the affect of de-registering stuff vs other solutions.
    – Sagive
    Sep 12, 2014 at 16:42
  • thanks for your input, its not what i what searching for but an intresting answer (and the only suggestion). Cheers, Sagive.
    – Sagive
    Jan 3, 2015 at 14:12

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