Online PHP editor | output for cGZDG

<?php function exception_error_handler($severity, $message, $file, $line) { if (!(error_reporting() & $severity)) { // This error code is not included in error_reporting return; } throw new ErrorException($message, 0, $severity, $file, $line); } set_error_handler("exception_error_handler"); $o=new STDClass(); $o->f=function(){ echo "i ran!"; }; try{ call_user_func($o->f,[]); }catch(Throwable $ex){ echo 'didn\'t work: $o->f()',PHP_EOL; }