有两种方法可以得到用户的session id,第一是使用session_id()函数,另外一种是使用内置的常量SID获得,SID包含了session id和session值。
<?php
session_start();
print("<html><b>");
$sid = session_id();
print("Session ID returned by session_id(): ".$sid."\n");
$sid = SID;
print("Session ID returned by SID: ".$sid."\n");
$mysite = $_SESSION["mysite"];
print("Value of mysite has been retrieved: ".$mysite."\n");
print("</b></html>\n");
?>
