php中检查服务器问题

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<?php print_r($_SERVER);?>

输出为：

Array ( [HTTP_HOST] => www.a.com [HTTP_USER_AGENT] => Mozilla/5.0 (Windows NT 6.1; WOW64; rv:27.0) Gecko/20100101 Firefox/27.0 [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_REFERER] => http://www.a.com/test/ [HTTP_CONNECTION] => keep-alive [PATH] => C:\Program Files (x86)\Common Files\NetSarang;D:\Oracle\product\11.2.0\dbhome_1\bin;C:\Java\jdk1.7\bin;%JAVA_HMOE%\jre\bin;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;D:\Program Files\TortoiseSVN\bin;C:\lamp\mysql5\MySQL Server 5.6\bin;F:\android\adt-bundle-windows-x86_64-20131030\sdk\tools;D:\soft\firefox;D:\soft\QQ\Bin; [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/2.2.9 (Win32) PHP/5.2.6 [SERVER_NAME] => www.a.com [SERVER_ADDR] => 127.0.0.1 [SERVER_PORT] => 80 [REMOTE_ADDR] => 127.0.0.1 [DOCUMENT_ROOT] => C:/lamp/Apache2.2/htdocs [SERVER_ADMIN] => wbaid@qq.com [SCRIPT_FILENAME] => C:/lamp/Apache2.2/htdocs/test/test.php [REMOTE_PORT] => 53663 [GATEWAY_INTERFACE] => CGI/1.1 [SERVER_PROTOCOL] => HTTP/1.1 [REQUEST_METHOD] => GET [QUERY_STRING] => [REQUEST_URI] => /test/test.php [SCRIPT_NAME] => /test/test.php [PHP_SELF] => /test/test.php [REQUEST_TIME] => 1396097540 )

只要在里面寻找需要的下标就可以

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