通过 ini_set("session.cookie_domain",'test.com');
session_start();
来设置
单点登录：名词，指a网站登录后，b网站同步登录
实际案例：百度搜索登录成功，百度网盘，百度等网站同步登录
实现步骤：
步骤1：修改hosts文件，增加两个域名解析到本机
image.png
步骤2：修改apache虚拟主机文件，增加两个站点 （注：修改后重启apache）
<VirtualHost _default_:80>
ServerName shop.php.com
DocumentRoot "E:\www2\shop"
<Directory "E:\www2\shop">
Options +Indexes +FollowSymLinks +ExecCGI
AllowOverride All
Order allow,deny
Allow from all
Require all granted
</Directory>
</VirtualHost>
<VirtualHost _default_:80>
ServerName blog.php.com
DocumentRoot "E:\www2\blog"
<Directory "E:\www2\blog">
Options +Indexes +FollowSymLinks +ExecCGI
AllowOverride All
Order allow,deny
Allow from all
Require all granted
</Directory>
</VirtualHost>
复制shop和blog目录放到配置的虚拟主机中
image.png
image.png
