Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Finds whether a variable is an object
<?php is_object(mixed $value): bool
<?php         $handler = require $handlerFile;



        if (! (is_object($handler) || is_array($handler))) {

            throw new HandlerNotFound("Handler `$handlerFile` must return a function or object handler. See https://bref.sh/docs/runtimes/function.html");

        }