Question

这是我的第一个使用facebook api和facebook PHP sdk的项目，基本上我试图获得所有用户状态。我写了一个应该可以工作的脚本，但是我得到了500错误（即使我改变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，看一下代码：

 $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);

}

如果我不记得该功能（基本上我注释掉if语句）脚本工作正常并打印20 + 20状态，否则它给我500内部错误。正如我所说，我尝试了changin max执行时间或set_time_limit（0），但没有任何反应。我不确定问题是我的托管（godaddy），还是我的脚本不好/不高效。任何帮助？谢谢Nico

Answer 1

我想我发现了你的问题。您将$nextResponse返回的值设为file_get_contents。如果无法检索到内容，请参阅http://php.net/manual/es/function.file-get-contents.php它会返回false。请尝试检查false而不是null：

        ..........

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

Facebook api，递归函数和500错误

1 个答案: