为什么PHP不允许在$ _SESSION中使用小数值作为根键？

Question

为什么PHP不允许在$ _SESSION中使用小数值作为根键？

例如......

$paper_num = '159339';
$mark = 'A';

$_SESSION[$paper_num][$mark];

......不起作用。

Answer 1

你不能把它作为数组保存在会话中，例如......

<?php
session_start();
$paper_num = '159339';
$mark = 'A';

$paper_detail = array(
'paper_number'=> $paper_num,
'paper_mark'=> $mark);

$_SESSION['paper_details'] = $paper_detail;
print_r($_SESSION['paper_details']);
?>