Remove Body Classes

Question

I need to remove specific body classes added as a comma separated delimited list to a custom field input field like this

wp-custom-logo, single-post, postid-28, single-format-standard, logged-in, admin-bar

Using this code only allows me to remove 1 class

add_filter('body_class', function (array $classes) {

if ( ! is_singular(array( 'post', 'page' ) ) ) {
    return;
}

$body_classes = get_post_meta( get_the_ID(), '_remove_body_classes', true );

unset( $classes[array_search($body_classes, $classes)] );

return $classes;

});

This code works when trying to remove 1 class on single posts but doesn't work when using a comma delimited list and also doesn't work on single pages.

Answer 1

One (untested) suggestion is to replace:

unset( $classes[array_search($body_classes, $classes)] );

with

$classes = array_diff( $classes, wp_parse_slug_list( $body_classes ) );

assuming the classes survive sanitize_title from wp_parse_slug_list(). It should also be alright with empty arrays.

We also note that wp_parse_slug_list() is using wp_parse_list() to parse the comma separated string.