啊快来帮帮忙呀

<?php <br />
// PHP5 Used __autoload function <br />
$obj_A = new clsA(); // in "cls" directory! <br />
$obj_B = new clsB(); // in "cls/cls" directory! <br />
function __autoload($className){ <br />
if(strtolowwer($className) == "clsb"){ <br />
require_once "cls/cls/$className.php"; <br />
}else{ <br />
include_once "cls/$className.php"; <br />
} <br />
} <br />
?> 

// ./myClass.php<br />
<?php<br />
class myClass {<br />
    public function __construct() {<br />
        echo "myClass init'ed successfuly!!!";<br />
    }<br />
}<br />
?><br />
<br />
// ./index.php<br />
<?php<br />
// we've writen this code where we need<br />
function __autoload($classname) {<br />
    $filename = "./". $classname .".php";<br />
    include_once($filename);<br />
}<br />
<br />
// we've called a class ***<br />
$obj = new myClass();<br />
?>