So in wp-includes/admin-bar.php there is a function that adds CSS styling to the page:

    function _admin_bar_bump_cb() { ?>
    <style type="text/css" media="screen">
        html { margin-top: 28px !important; }
        * html body { margin-top: 28px !important; }

I want to comment this out properly (either the function or the contents of the function, either one is fine) but not touch the core code. How would I do this?


I think you can do it like this:

function my_admin_bar_init() {
    remove_action('wp_head', '_admin_bar_bump_cb');
add_action('admin_bar_init', 'my_admin_bar_init');

Add this to your functions.php file. It will disable outputting of these inline styles in <head> section but the wp_admin_bar will be still available.

If you would like to disable wp_admin_bar entirely, you can do it like this:

remove_action( 'wp_footer', 'wp_admin_bar_render', 1000 );
  • no you'd better use remove_action( 'wp_footer', 'wp_admin_bar_render', 1000 ) moreover he said he want to comment out. – JMau Jun 21 '13 at 14:56
  • But he wants to disable these styles, not the admin_bar entirely... – Krzysiek Dróżdż Jun 21 '13 at 14:57
  • Hey Krzy, so admin_bar_init is what calls _admin_bar_bump_cb? And by adding the remove_action, you are removing it from the sequence of functions that admin_bar_init runs? – bigpotato Jun 21 '13 at 15:05
  • Well. It's not so easy. In class-wp-admin-bar.php file you can find: if ( empty($header_callback) ) $header_callback = '_admin_bar_bump_cb'; add_action('wp_head', $header_callback); on line 56. Then the action admin_bar_init is called. So on this hook you can remove function _admin_bar_bump_cb from this hook and disable it's output. – Krzysiek Dróżdż Jun 21 '13 at 15:08
  • Nice. Sorry this is my first time touching WP. So the point of actions/filters is so that you can customize core functions in specific places by replacing the add_action and add_filter with your own version? – bigpotato Jun 21 '13 at 15:12

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