如何用php的环境变量得到一个网页地址的内容？ip地址又要怎样得到？

结果：echo $_SERVER ["PHP_SELF"];echo $_SERVER ["SERVER_ADDR"];方法之一：

echo "

";

print_r($_SERVER);
?>
输出：
Array
(
[HTTP_HOST] => localhost
[HTTP_USER_AGENT] => Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Firefox/24.0
[HTTP_ACCEPT] => text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
[HTTP_ACCEPT_LANGUAGE] => zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3
[HTTP_ACCEPT_ENCODING] => gzip, deflate
[HTTP_CONNECTION] => keep-alive
[HTTP_CACHE_CONTROL] => max-age=0
[PATH] => C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;
[SystemRoot] => C:\Windows
[COMSPEC] => C:\Windows\system32\cmd.exe
[PATHEXT] => .COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
[WINDIR] => C:\Windows
[SERVER_SIGNATURE] =>
[SERVER_SOFTWARE] => Apache/2.2.6 (Win32) PHP/5.2.5
[SERVER_NAME] => localhost
[SERVER_ADDR] => 127.0.0.1
[SERVER_PORT] => 80
[REMOTE_ADDR] => 127.0.0.1
[DOCUMENT_ROOT] => D:/wamp/www
[SERVER_ADMIN] => webmaster@localhost
[SCRIPT_FILENAME] => D:/wamp/www/index.php
[REMOTE_PORT] => 54001
[GATEWAY_INTERFACE] => CGI/1.1
[SERVER_PROTOCOL] => HTTP/1.1
[REQUEST_METHOD] => GET
[QUERY_STRING] =>
[REQUEST_URI] => /index.php
[SCRIPT_NAME] => /index.php
[PHP_SELF] => /index.php
[REQUEST_TIME] => 1381126174
[argv] => Array
(
)
[argc] => 0)答案：echo $_SERVER ["PHP_SELF"];echo $_SERVER ["SERVER_ADDR"];