PHP obtains several global variables of a domain name.

PHP obtains several global variables of a domain name.

// Obtain the current domain name: Echo $ _ SERVER ['server _ name']; // Obtain the source URL, that is, click the previous URL on this page. Echo" "; Echo $ _ SERVER ["HTTP_REFERER"]; // Obtain the suffix of the domain name on the previous page Echo" "; Echo $ _ SERVER ['request _ URI ']; // Obtain the suffix of the current domain name Echo" "; Echo $ _ SERVER ['http _ host']; // Obtain the current domain name Echo" "; // Bbs.it-home.org Dirname (_ FILE _); // Obtain the physical path of the current FILE Dirname (_ FILE _). "/../"; // Obtain the upper-level physical path of the current FILE Exit; ?>