get_the_categories filter-hook . WP 3.1.0

Filters the array of categories to return for a post.

Usage

add_filter( 'get_the_categories', 'filter_function_name_1931', 10, 2 );
function filter_function_name_1931( $categories, $id ){
	// filter...

	return $categories;
}

$categories(WP_Term[])

An array of categories to return for the post.

$id(int/false)

ID of the post.

Notes

• Since 4.4.0 Added $id parameter.

Where the hook is called

return apply_filters( 'get_the_categories', $categories, $id );

Where the hook is used (in WP core)