<?php
/**
 * as a funciton file at My\autoload.php
 * Usage:
 *
 * require_once 'My\Autoload.php';
 * spl_autoload_register(new My\Autoloader);
 */

namespace My;

class Autoloader {
    public function __invoke($name) {
        if (strpos($name, __NAMESPACE__ . '\\') !== 0) {
            return;
        }
        // resolve class return true, if not
    }
    public function autoload($class) {
        return $this->__invoke($class);
    }
}

?>


<?php
/**
 * as a function file at My\autoload.php
 * Usage:
 *
 * spl_autoload_register(include 'My\autoload.php');
 */

return function ($class) {
    if (strpos($name, __NAMESPACE__ . '\\') !== 0) {
        return;
    }
    // resolve class return true, if not
};