Ajouter un rôle utilisateur supplémentaire à WordPress

function.php

function modify_capabilities() {
	$editor_role = get_role('author');
	add_role('authorplus', 'AuteurPlus', $editor_role->capabilities);
	$owner_role = get_role('authorplus');
	$owner_role->add_cap('edit_others_posts');
	$owner_role->add_cap('delete_others_posts');
	$owner_role->add_cap('read_private_posts');
	$owner_role->add_cap('delete_private_posts');
	$owner_role->add_cap('edit_private_posts');
	$owner_role->add_cap('unfiltered_html');
	$owner_role->add_cap('moderate_comments');
	$owner_role->add_cap('manage_categories');
	$owner_role->add_cap('manage_links');
}
add_action('init','modify_capabilities');