php中$_SERVER怎么用
php中$_SERVER的用法
打开编辑器,在文件中写上注释内容。
#$_SERVER的使用
$_SERVER['PHP_SELF'],这个命令是用来获得服务器的当前执行脚本的文件名
$_SERVER['SERVER_NAME'],这个命令是用来获得服务器的名称。
$_SERVER['HTTP_HOST'],用来获得host头部的名称。
$_SERVER['HTTP_REFERER'],用来引导用户代理到当前页的前一页的地址。
$_SERVER['SCRIPT_FILENAME'],用来获得当前执行脚本的绝对路径。
$_SERVER['SERVER_PORT'],用来获得服务器的端口。
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