Problem with overriding parent theme functions

What’s the body class you want to remove or add?

For example if you want to remove the full-width body class then this works well.

add_filter('body_class','twentytwelvechild_body_classes',20);
function twentytwelvechild_body_classes( $classes ) {
	foreach($classes as $key => $value) {
		if ($value == 'full-width') unset($classes[$key]);
	}
	return $classes;
}

See alchymyth’s example here https://www.ads-software.com/support/topic/twenty-twelve-hardcode-sidebar?replies=13#post-3615651

Adding classes works also.

// Add specific CSS class by filter
add_filter('body_class','my_class_names');
function my_class_names($classes) {
	// add 'class-name' to the $classes array
	$classes[] = 'class-name';
	// return the $classes array
	return $classes;
}

See https://codex.www.ads-software.com/Function_Reference/body_class#Add_Classes_By_Filters for more examples.

Removing the full-width body class was exactly what I needed. Thanks.

I also found a solution in this thread: https://www.ads-software.com/support/topic/overriding-twentytwelve_wp_title-in-a-child-theme?replies=5, as I see, from the same guy. This worked for overriding the parent’s functions.

Glad to help especially when all I did was recycle alchymyth’s reply. ??