Facebook api，递归函数和500错误

这是我第一个使用facebookapi和facebookphp-sdk的项目，基本上我正在尝试获取所有用户状态。我写了一个应该可以工作的脚本，但我得到了500个错误（即使我更改了最大执行时间或设置了时间限制（0）），但只有当我在里面使用递归函数时，才可以查看代码：

 $request = new FacebookRequest(
 $session,
 'GET',
 '/me/statuses'
 );
$response = $request->execute();
$graphObject = $response->getGraphObject();
$x = $graphObject->getProperty('data');
$y = $x->asArray(); //now i got an array
$paging = $graphObject->getProperty('paging'); // i pick paging with "next" and "prevoiuos "
$paged = $paging->asArray();  //as array
$counter = 0 ;              
foreach ($y as $el){
        echo ('<h3>'.$y[$counter]->message.'</h3>');
        echo "<br/>";
        echo "<br/>";
        $counter++;
}
$next = $paged['next']; // now i got url for load 20 more statuses
$response = file_get_contents($next); // get content of url
//recoursive function every time i use looper with content of next
function looper($response){
    $array = json_decode($response, true);  
    $secondarray = ($array['data']);
    $paging = ($array['paging']); // again i pick url for load  next statuses
    $next =  $paging['next'];// again i pick url for load  next statuses
    $nextResponse = file_get_contents($next);// again i pick url for load  next      statuses and i will use this.
    $counter2 = 0 ;             
        foreach ($secondarray as $el){  //  put on page next 20 statuses
                echo ('<h3>'. $secondarray[$counter2]['message'] .'</h3>');
                echo "<br/>";
                echo "<br/>";
                $counter2++;

        }   
        if ( is_null($nextResponse) == false ){ // if in next call i  got 20 more statuses(not empty) call again this function
            looper($nextResponse);
        } else { echo "last message" ; die();}  //else stop.
}
looper($response);

}

如果我记不起这个函数（基本上我注释掉了If语句），脚本运行良好，并打印出20+20个状态，否则它会给我500个内部错误。正如我所说，我尝试更改最大执行时间或set_time_limit（0），但什么也没发生。我不确定问题是我的主机（godaddy），还是我的脚本不好/效率不高。有什么帮助吗？感谢Nico