<?php

// aliases definitions, @ is a reserved word and should be escaped
// since is used as regex delimiter
$aliases = array(
    '^/?$' => 'Misc::home',
    '^/(.*)/(.*)/?$' => 'Profile::home',
    '^/(.*)/?$' => 'Profile::home'
);

foreach ($aliases as $alias => $dest) {
    // cycle through aliases to find a matching one
    $regex = '@' . $alias . '@';
    preg_match($regex, $argv[1], $values);
    if ($values) {
        // we have a match, remove first part (whole matching string)
        array_shift($values);
        // get class and method and instance
        list($className, $method) = explode('::', $dest);
        $class = new $className;
        // execute
        call_user_func_array(array($class, $method), $values);
        break;
    }
}

// only for testing purpose :)
class Profile
{

    public function home($userName, $section = 'home')
    {
        echo 'Perfil de ' . $userName . ', estas en ' . $section . "\n";
    }

}

class Misc
{

    public function home()
    {
        echo 'Esto es / y no recibe parametros' . "\n";
    }

}