Usage
add_filter( 'attachment_url_to_postid', 'your_callback_function', 10, 2 );Filter Callback:
function your_callback_function( $post_id, $url ) {
// Your code here
return $post_id;
}Parameters
$post_idParameter 1
$urlParameter 2
🔄 Filter Hook
Filter hooks allow you to modify data before it is saved to the database or displayed on the screen. Filters must return a value.