Xampp 中的 PHP 会话问题 [英] Problem with PHP session in Xampp
问题描述
最简单的，如果 file_1.php 包含
At it's simplest, if file_1.php contains
<?php
session_start();
$_SESSION["test_message"] = "Hello, world";
header("Location: http://localhost/file_2.php");
?>
和file_2.php包含
and file_2.php contains
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN""http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
</head>
<body>
<?php
if (!(isset($_SESSION["test_message"])))
echo "Test message is not set";
else
echo $_SESSION["test_message"];
var_dump($_SESSION);
session_destroy();
?>
</body>
</html>
结果是 Test message is not set 并且 var_dump($_SESSION) 返回 null - 本地，使用 Xampp.但是，如果我将这些相同的文件上传到付费托管网站，它会起作用并且我看到
the result is Test message is not set and a var_dump($_SESSION) returns null - locally, with Xampp. However, if I upload those same files to a paid-for hosted web site, it works and I see
Hello, world
array
'test_message' => string 'Hello, world' (length=12)
当我在 Xampp 下查看 PHPinfo 时，它显示 Session Support enabled.我做错了什么?
When I look at PHPinfo under Xampp it shows Session Support enabled. What am I doing wrong?
推荐答案
你忘记了 file_2.php 顶部的 session_start
You've forgotten the session_start at the top of file_2.php
所以应该是:
<?php
session_start();
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN""http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
</head>
<body>
<?php
if (!(isset($_SESSION["test_message"])))
echo "Test message is not set";
else
echo $_SESSION["test_message"];
var_dump($_SESSION);
session_destroy();
?>
</body>
</html>
session_start() 应该位于您需要访问会话函数的每个文件的顶部.
session_start() should be at the top of every file where you need to access the session functions.
在重定向到另一个页面之前，您确实应该使用 session_write_close.
You should really use session_write_close before redirecting to another page.
第一个文件:
<?php
session_start();
$_SESSION["test_message"] = "Hello, world";
session_write_close();
header("Location: http://localhost/file_2.php");
?>
这篇关于Xampp 中的 PHP 会话问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
