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Php 会议+；另一次会议_Php_Operators_Session Variables - Fatal编程技术网
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Php 会议+；另一次会议

php

Php 会议+；另一次会议,php,operators,session-variables,Php,Operators,Session Variables,我试过这个： $_SESSION['fullname'] = $_SESSION['firstname'] + $_SESSION['surname']; echo $_SESSION['fullname']; 但是它不起作用：-（你可能是说： $_SESSION['fullname'] = $_SESSION['firstname'] . $_SESSION['surname']; // ^ 要连接字

我试过这个：

$_SESSION['fullname'] = $_SESSION['firstname'] + $_SESSION['surname'];

echo $_SESSION['fullname'];
但是它不起作用：-（

你可能是说：

$_SESSION['fullname'] = $_SESSION['firstname'] . $_SESSION['surname'];
//                                             ^
要连接字符串，应使用
而不是
+

组合字符串，请使用“.”而不是“+”
$\u SESSION['fullname']=$\u SESSION['firstname']。$\u SESSION['names']；

您是否在页面顶部添加了
SESSION\u start（）