PHP获取当前url路径的函数及服务器变量

1,$_SERVER["QUERY_STRING"] 说明:查询(query)的字符串 2,$_SERVER["REQUEST_URI"] 说明:访问此页面所需的URI 3,$_SERVER["SCRIPT_NAME"] 说明:包含当前脚本的路径 4,$_SERVER["PHP_SELF"] 说明:当前正在执行脚本的文件名 实例: 1,http://www.mudbest.com/ (直接打开主页) 结果: $_SERVER["QUERY_STRING"] = "" $_SERVER["REQUEST_URI"] = "/" $_SERVER["SCRIPT_NAME"] = "/index.php" $_SERVER["PHP_SELF"] = "/index.php" 2,http://www.mudbest.com/?p=222 结果: $_SERVER["QUERY_STRING"] = "p=222" $_SERVER["REQUEST_URI"] = "/?p=222" $_SERVER["SCRIPT_NAME"] = "/index.php" $_SERVER["PHP_SELF"] = "/index.php" 3,http://www.mudbest.com/index.php?p=222&q=biuuu 结果: $_SERVER["QUERY_STRING"] = "p=222&q=php" $_SERVER["REQUEST_URI"] = "/index.php?p=222&q=php" $_SERVER["SCRIPT_NAME"] = "/index.php" $_SERVER["PHP_SELF"] = "/index.php" $_SERVER["QUERY_STRING"]获取查询语句,实例中可知,获取