Impossible to use wp_admin_bar_class filter

[geminorum]

wanting to extend WP_Admin_Bar class, cannot include the class-wp-admin-bar.php for a fatal (cannot redeclare class). because of require() instead of require_once() on _wp_admin_bar_init()

Seems like a valid bug. I'll get a patch for it.

There is no need to require class-wp-admin-bar.php a second time. If you're extending it, then it's already loaded by the time the 'wp_admin_bar_class' filter is fired.

Test code:

<?php
function check_wp_admin_bar_class( $class ) {
	class My_Admin_Bar extends WP_Admin_Bar {
	
	}

	echo '<p>&nbsp;</p><p><pre>'; var_dump( class_exists( 'My_Admin_Bar' ) ); echo '</pre></p>';
	return 'My_Admin_Bar';
}

add_action( 'wp_admin_bar_class', 'check_wp_admin_bar_class' );

kawauso's way works, sorry to bother.