PHP obtains the code of the current website and domain name
- Echo SERVER ['server _ name']; // Obtain the source URL, that is, click the previous URL on this page.
- Echo SERVER ["HTTP_REFERER"];
- SERVER ['request _ URI ']; // Obtain the suffix of the current domain name
- SERVER ['http _ host']; // Obtain the current domain name
- Dirname (_ FILE _); // Obtain the physical path of the current FILE
- Dirname (_ FILE _). "/../"; // Obtain the upper-level physical path of the current FILE
- ?>
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