PHP似乎执行了两次脚本 [英] PHP seems to execute script twice

问题描述

我的Web服务器运行异常.似乎它先执行两次脚本(PHP)，然后再发送给Apache.

My web server is acting wierd. It seems like it executes scripts (PHP) twice before sending then to apache.

我已经运行了该文件:

<?php
echo '<pre>';
session_start();
$_SESSION['index']++;
echo '<br>';
print_r($_SESSION);
?>

我知道++首先会发出通知，但这只是为了研究它是否运行两次.无论如何，打印的会话显示每次加载页面时index-index都会增加2.

And I know that ++ will give a notice at first, but it's just to investigate if it runs twice. Anyway, the printed session shows that the index-index increases by two each time you load the page.

该网络服务器是apache2，安装在debian单元上的php5.

The webserver is apache2, php5 installed on a debian unit.

有人有什么想法吗?

推荐答案

echo '<pre>'; //Headers and cookies already sent.
session_start(); //Cannot set cookie anymore, system tries again, I guess

首先启动会话，然后输出任何内容.尝试将 session_start(); 放在顶部

Start session first, then output anything. Try placing session_start(); on top

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