问题

我在本地网络服务器上使用了以下代码，没有任何问题：

```php
function redirect($url) {
    header('Location: '.$url);
    exit();
}

但在我的托管服务器上出现了“输出已发送”的错误。我设计了一个JavaScript 解决方法，如下所示：

function redirect_to($new_location)
{
    $redirects = [
        "<script>window.location.replace(\"login.php\");</script>",
        "<script>window.location.replace(\"select_set.php\");</script>",
        "<script>window.location.replace(\"run_order.php\");</script>",
        "<script>window.location.replace(\"display_setlist.php\");</script>",
        "<script>window.location.replace(\"manage_admins.php\");</script>",
        "<script>window.location.replace(\"clients.php\");</script>",
        "<script>window.location.replace(\"manage_songs.php\");</script>",
        "<script>window.location.replace(\"admin.php\");</script>"
    ];
    for ($i=0;$i<count($redirects);$i++) {
        if (strpos($redirects[$i], $new_location)) {
            echo $redirects[$i];
        }
    }
}

这种方法不够优雅，每次重定向都需要编写一个单独的脚本。

我的问题是：是否有办法将 PHP 变量 $new_location 插入到 JavaScript 字符串中？是否可行？

我学会了如何在 PHP 和 JavaScript 中相互插入代码。我尝试过以各种方式结合这两种插入方法，但没有成功。

<details>
<summary>英文:</summary>

I used: 
    `function redirect($url) {header(&#39;Location: &#39;.$url);
         exit();
    }`
on my local network server without any problems but it failed with &#39;output already sent&#39; errors on my hosting server. I devised a javascript work-around that works as shown in the code below.

    

function redirect_to($new_location)
{
$redirects = [
"<script>window.location.replace(\"login.php\");</script>",
"<script>window.location.replace(\"select_set.php\");</script>",
"<script>window.location.replace(\"run_order.php\");</script>",
"<script>window.location.replace(\"display_setlist.php\");</script>",
"<script>window.location.replace(\"manage_admins.php\");</script>",
"<script>window.location.replace(\"clients.php\");</script>",
"<script>window.location.replace(\"manage_songs.php\");</script>",
"<script>window.location.replace(\"admin.php\");</script>"
];
for ($i=0;$i<count($redirects);$i++) {
if (strpos($redirects[$i], $new_location)) {
echo $redirects[$i];
}
}
}

It's not elegant and requires a separate script to be written for each redirect.

My question: Is there a way to insert the PHP variable '$new_location' into the javascript string. Can it be done?



I learned how to insert javascript into php and vice versa. I've tried combining the two insertion methods in various ways without success.

</details>


# 答案1
**得分**: -1

你真的应该使用 .htaccess 文件

RewriteEngine on

RewriteCond %{REQUEST_FILENAME}.php -f
RewriteRule ^(.+?)/?$ /$1.php [L,R=301]

查找和头部重定向应该可以工作，你应该调查为什么它不起作用。

你很可能插入了空格，如

?>

<?php

一旦弄清楚托管情况，你可以使用以下版本。他们的帮助台应该能够提供帮助。

```php
function redirect_to($new_location) {
  $redirects = [
    'login' => 'login.php',
    'select_set' => 'select_set.php',
    'run_order' => 'run_order.php',
    'display_setlist' => 'display_setlist.php',
    'manage_admins' => 'manage_admins.php',
    'clients' => 'clients.php',
    'manage_songs' => 'manage_songs.php',
    'admin' => 'admin.php'
  ];

  if(array_key_exists($new_location, $redirects)) {
    header('Location: ' . $redirects[$new_location]);
    exit;
  }
}

RewriteEngine on

RewriteCond %{REQUEST_FILENAME}.php -f
RewriteRule ^(.+?)/?$ /$1.php [L,R=301] 

?>

<?php

function redirect_to($new_location) {
  $redirects = [
    'login' => 'login.php',
    'select_set' => 'select_set.php',
    'run_order' => 'run_order.php',
    'display_setlist' => 'display_setlist.php',
    'manage_admins' => 'manage_admins.php',
    'clients' => 'clients.php',
    'manage_songs' => 'manage_songs.php',
    'admin' => 'admin.php'
  ];

  if(array_key_exists($new_location, $redirects)) {
    header('Location: ' . $redirects[$new_location]);
    exit;
  }
}