lunch_autoload.php

<?php

function loadClasses($classname) {
    // le répertoire d'installation de l'application
    if (is_file($classname . '.php')) {
        require_once $classname . '.php';
    }
    $myAppDirs = array('Controller', 'Model', 'View');
    foreach ($myAppDirs as $cdir) {
        $filepath = $cdir . DIRECTORY_SEPARATOR . $classname . '.php';
        if (is_file($filepath)) {
            require_once $filepath;
        }
    }
}

//enregistre le loader
spl_autoload_register('loadClasses');