php $_SERVER详细介绍
$_SERVER['HTTP_ACCEPT_LANGUAGE']//浏览器语言 $_SERVER['REMOTE_ADDR'] //当前用户 IP 。 $_SERVER['REMOTE_HOST'] //当前用户主机名 $_SERVER['REQUEST_URI'] //URL $_SERVER['REMOTE_PORT'] //端口。 $_SERVER['SERVER_NAME'] //服务器主机的名称。 $_SERVER['PHP_SELF']//正在执行脚本的文件名 $_SERVER['argv'] //传递给该脚本的参数。 $_SERVER['argc'] //传递给程序的命令行参数的个数。 $_SERVER['GATEWAY_INTERFACE']//CGI 规范的版本。 $_SERVER['SERVER_SOFTWARE'] //服务器标识的字串 $_SERVER['SERVER_PROTOCOL'] //请求页面时通信协议的名称和版本 $_SERVER['REQUEST_METHOD']//访问页面时的请求方法 $_SERVER['QUERY_STRING'] //查询(query)的字符串。 $_SERVER['DOCUMENT_ROOT'] //当前运行脚本所在的文档根目录 $_SERVER['HTTP_ACCEPT'] //当前请求的 Accept: 头部的内容。 $_SERVER['HTTP_ACCEPT_CHARSET'] //当前请求的 Accept-Charset: 头部的内容。 $_SERVER['HTTP_ACCEPT_ENCODING'] //当前请求的 Accept-Encoding: 头部的内容 $_SERVER['HTTP_CONNECTION'] //当前请求的 Connection: 头部的内容。例如:“Keep-Alive”。 $_SERVER['HTTP_HOST'] //当前请求的 Host: 头部的内容。 $_SERVER['HTTP_REFERER'] //链接到当前页面的前一页面的 URL 地址。 $_SERVER['HTTP_USER_AGENT'] //当前请求的 User_Agent: 头部的内容。 $_SERVER['HTTPS']//如果通过https访问,则被设为一个非空的值(on),否则返回off $_SERVER['SCRIPT_FILENAME'] #当前执行脚本的绝对路径名。 $_SERVER['SERVER_ADMIN'] #管理员信息 $_SERVER['SERVER_PORT'] #服务器所使用的端口 $_SERVER['SERVER_SIGNATURE'] #包含服务器版本和虚拟主机名的字符串。 $_SERVER['PATH_TRANSLATED'] #当前脚本所在文件系统(不是文档根目录)的基本路径。 $_SERVER['SCRIPT_NAME'] #包含当前脚本的路径。这在页面需要指向自己时非常有用。 $_SERVER['PHP_AUTH_USER'] #当 PHP 运行在 Apache 模块方式下,并且正在使用 HTTP 认证功能,这个变量便是用户输入的用户名。 $_SERVER['PHP_AUTH_PW'] #当 PHP 运行在 Apache 模块方式下,并且正在使用 HTTP 认证功能,这个变量便是用户输入的密码。 $_SERVER['AUTH_TYPE'] #当 PHP 运行在 Apache 模块方式下,并且正在使用 HTTP 认证功能,这个变量便是认证的类型

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