Please provide an example of such a tool for PHP. Also provide a working example of PHP code where removing all annotations causes working code to fail silently

Please provide an example of such a tool for PHP. Also provide a working example of PHP code where removing all annotations causes working code to fail silently. In my experience with using annotations in PHP if the annotations are missing/invalid the compiling code throws very descriptive error messages. Your good, valid, technical reasons are anything but.