php中全局变量列表:
$GLOBALS $_SERVER $_REQUEST $_POST $_GET $_FILES $_ENV $_COOKIE $_SESSION
1、$GLOBALS可将$GLOBALS['a']中php变量a转化成全局变量!
例如:
2、$_SERVER 这种超全局变量保存关于报头、路径和脚本位置的信息。
例如:
"; echo $_SERVER['SERVER_NAME']; echo "
"; echo $_SERVER['HTTP_HOST']; echo "
"; echo $_SERVER['HTTP_REFERER']; echo "
"; echo $_SERVER['HTTP_USER_AGENT']; echo "
"; echo $_SERVER['SCRIPT_NAME']; ?>
3、PHP $_REQUEST 用于收集 HTML 表单提交的数据。用法同$_GET和$_POST一模一样;