Php 为什么我会得到一个“a”；页面不是'；t正确重定向“；错误？

我是从nettuts那里得到的，有人能告诉我为什么会出现“页面没有正确重定向”错误吗

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将经过身份验证的用户重定向到
$facebook->getLoginUrl（数组（…）
，创建重定向循环

您应该只重定向未经身份验证的用户（使用
req\u perms
重定向应该在
else
子句中）。只有当您检测到用户未授予您所有必需的权限时，
try
中的重定向才会发生

您可以通过调用以下命令来检查授予的权限：

$perms = $facebook->api(array(
    'method' => 'fql.query',
    'query' => 'SELECT email,user_birthday,status_update,publish_stream,user_photos,user_videos FROM permissions WHERE uid=' . $facebook->getUser()
));


修改代码：

<?php
# We require the library
require("facebook.php");

# Creating the facebook object
$facebook = new Facebook(array(
    'appId'  => 'APP_ID_HERE',
    'secret' => 'APP_SECRET_HERE',
    'cookie' => true
));

# Let's see if we have an active session
$session = $facebook->getUser();

if(empty($session)) {
    # There's no active session, let's generate one
    $url = $facebook->getLoginUrl(array(
        'req_perms' => 'email,user_birthday,status_update,publish_stream,user_photos,user_videos'
    ));
    header("Location: $url");
    exit;
}
// user is logged in

如果您使用的是最新的PHP SDK，那么已经进行了一些更改，并且您请求的权限不是这样工作的

这是一个更新的代码

<?php 
# We require the library 
require("facebook.php"); 

# Creating the facebook object 
$facebook = new Facebook(array( 
    'appId'  => 'APP_ID_HERE', 
    'secret' => 'APP_SECRET_HERE', 
    'cookie' => true 
)); 

# Let's see if we have an active session 
$session = $facebook->getUser(); 

if(empty($session)) { 
    # There's no active session, let's generate one 
    $url = $facebook->getLoginUrl(array( 
        "response_type"=>"token", //Can also be "code" if you need to
        "scope" => 'email,user_birthday,status_update,publish_stream,user_photos,user_videos' ,
        "redirect_uri"=> "http://test.com" //Your app callback url
    )); 
    header("Location: $url"); 
    exit; 
} 
// user is logged in 

你能帮我修复上面粘贴的代码吗？：（，我不明白你的意思。如果发生异常，做点什么。永远不要扔掉它。
<?php 
# We require the library 
require("facebook.php"); 

# Creating the facebook object 
$facebook = new Facebook(array( 
    'appId'  => 'APP_ID_HERE', 
    'secret' => 'APP_SECRET_HERE', 
    'cookie' => true 
)); 

# Let's see if we have an active session 
$session = $facebook->getUser(); 

if(empty($session)) { 
    # There's no active session, let's generate one 
    $url = $facebook->getLoginUrl(array( 
        "response_type"=>"token", //Can also be "code" if you need to
        "scope" => 'email,user_birthday,status_update,publish_stream,user_photos,user_videos' ,
        "redirect_uri"=> "http://test.com" //Your app callback url
    )); 
    header("Location: $url"); 
    exit; 
} 
// user is logged in