Create instances of all classes in a directory with PHP

I have a directory with several PHP files consisting of classes with the same names as the files. (Sample.php‘s class will be called Sample.)

Each of these classes have a function called OnCall().

How can I create an instance of every class in my directory and execute all of their OnCall()s?

I cannot do it manually ($sample = new Sample(); $sample->OnCall();, etc etc etc) because more classes will be added, edited and deleted by users.

Answer

Something like this ought to get the job done:

<?php

    foreach (glob('test/class/*.php') as $file)
    {
        require_once $file;

        // get the file name of the current file without the extension
        // which is essentially the class name
        $class = basename($file, '.php');

        if (class_exists($class))
        {
            $obj = new $class;
            $obj->OnCall();
        }
    }