当Echo不存在时，错误500？

Question

当我在某个位置添加回送时，我的php代码工作得很好，但是当我删除简单的echo "hello";行时，它没有加载php页面，它只显示了Server 500。

以下代码起作用：

require 'steam.php';
    $steam = new steam();
    $api = "FC1D74A835829EB99A571235A499638A";
    $query = 'ari9';

    $communityID            =   $steam->getID($query, $api);
    $userInfo               =   $steam->getUserInfo($communityID, $api);

    echo "hello";

    $info = array(
        'communityID'   =>  $communityID,
        'steamID'       =>  $steam->$convertToSteamID($communityID),
        'personaname'   =>  $userInfo['personaname'],
        'profileurl'    =>  $userInfo['profileurl'],
        'lastlogoff'    =>  $userInfo['lastlogoff'],
    );

    foreach ($info as $key => $value) {
        if (strlen($value)===0) {
            $info[$key] = false;
        }
        echo $key." -> ".$value."<br>";
    }
    echo json_encode($info);

下面的代码会使不工作：

require 'steam.php';
    $steam = new steam();
    $api = "FC1D74A835829EB99A571235A499638A";
    $query = 'ari9';

    $communityID            =   $steam->getID($query, $api);
    $userInfo               =   $steam->getUserInfo($communityID, $api);

    $info = array(
        'communityID'   =>  $communityID,
        'steamID'       =>  $steam->$convertToSteamID($communityID),
        'personaname'   =>  $userInfo['personaname'],
        'profileurl'    =>  $userInfo['profileurl'],
        'lastlogoff'    =>  $userInfo['lastlogoff'],
    );

    foreach ($info as $key => $value) {
        if (strlen($value)===0) {
            $info[$key] = false;
        }
        echo $key." -> ".$value."<br>";
    }
    echo json_encode($info);

下面的代码会使不工作：

require 'steam.php';
    $steam = new steam();
    $api = "FC1D74A835829EB99A571235A499638A";
    $query = 'ari9';

    $communityID            =   $steam->getID($query, $api);
    $userInfo               =   $steam->getUserInfo($communityID, $api);

    $info = array(
        'communityID'   =>  $communityID,
        'steamID'       =>  $steam->$convertToSteamID($communityID),
        'personaname'   =>  $userInfo['personaname'],
        'profileurl'    =>  $userInfo['profileurl'],
        'lastlogoff'    =>  $userInfo['lastlogoff'],
    );

    foreach ($info as $key => $value) {
        if (strlen($value)===0) {
            $info[$key] = false;
        }
        echo $key." -> ".$value."<br>";
    }
    echo json_encode($info);

    echo "Hello";

第一段代码在第9行有回显，第二部分与第一行相同，但第9行的回波被移除。我对此感到困惑。

Answer 1

问题是，这个$steam->$convertToSteamID正在寻找一个函数，它的名称是变量值。在没有回波的情况下，你得到500的原因是因为当你发送一个200的回波时。日志中应该有显示错误的事件。您不能有两个状态代码，但在一页。

因此，只需将函数调用更改为：

$steam->convertToSteamID

你应该没事的。