会话变量似乎没有被保存 [英] Session variables seem not to be saved

问题描述

相当简单的代码:

<?
session_start();
$_SESSION['t'.time()]     = "ok";
echo "<pre>".print_r($_SESSION, 1)."</pre>";
?>

正如预期的那样显示

Array
(
    [t1330966834] => ok
    [t1330966835] => ok
    [t1330966836] => ok
)

重新加载 3 页后.

让我们改变一些符号:

$_SESSION[time()]     = "ok";

(现在没有 't')，我希望在几次重新加载后像

(now without 't') and I expect after few reloads something like

Array
(
    [t1330966834] => ok
    [t1330966835] => ok
    [t1330966836] => ok
    [1330967020] => ok
    [1330967021] => ok
    [1330967022] => ok
    [1330967023] => ok
)

但实际上结果完全不同:

But actually the result is absolutely different:

   Array
    (
        [t1330966834] => ok
        [t1330966835] => ok
        [t1330966836] => ok
        [1330967020] => ok
    )

我们有 3 个先前的数组单元格和一个且只有一个时间"单元格 - 无论您重新加载页面多少次.时间是正确的，它每秒都不同，但只有一个没有t"的单元格！我也试过

We have 3 previous array cells ad one and only one 'time' cell - no matter how many times you reload the page. The time is correct, it different each second but only one cell without 't'! Also I tried

$t =time();
$_SESSION[$t]     = "ok";

甚至

$t =intval(time());
$_SESSION[$t]     = "ok";

但随着时间的推移，它只剩下一个细胞.

But it's remains only one cell with time.

在 php 5.2.13 和 5.3.10 上在 2 个不同的服务器上进行了测试.我做错了什么?

Tested at php 5.2.13 and 5.3.10 at 2 different servers. What am I doing wrong?

推荐答案

$_SESSION 关联数组中的键与 PHP 中的常规变量名称具有相同的限制，即它们不能以数字开头，必须以字母或下划线开头.有关更多详细信息，请参阅本手册中有关变量的部分.

The keys in the $_SESSION associative array are subject to the same limitations as regular variable names in PHP, i.e. they cannot start with a number and must start with a letter or underscore. For more details see the section on variables in this manual.

http://php.net/manual/en/session.examples.basic.php

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