Re: differences in between these env. variables

On Wed, Jan 11, 2012 at 5:49 PM, Matijn Woudt <tijnema@gmail.com> wrote: > On Thu, Jan 12, 2012 at 12:26 AM, Haluk Karamete > <halukkaramete@gmail.com> wrote: >> I've grouped these env variables, each group returns the same values >> is there a difference? which ones do you use? which ones should I not >> use for the purposes listed below >> > You can find the answers here: > http://nl3.php.net/manual/en/reserved.variables.server.php > I'll try to answer them in short > >> group1 >> SCRIPT_FILENAME vs PATH_TRANSLATED >> where both return D:\Hosting\5291100\html\directory\file.php >> purpose: get the full file path to the php script >> > SCRIPT_FILENAME can be a relative path, PATH_TRANSLATED is the full > path. This is only true if run from CLI. > On my Ubuntu box I don't even have PATH_TRANSLATED, so SCRIPT_FILENAME > is recommended. >> >> group2 >> REMOTE_ADDR vs REMOTE_HOST >> where both return same IP >> purpose: get the visitor's ip > > REMOTE_HOST is not necessary always IP, if PHP succeeds to do a > reverse lookup (ie. get name for this ip), than REMOTE_HOST contains a > name instead of ip. You need to set a config option for this, though. > Recommended: REMOTE_ADDR, it matches what you need, doesn't need > config, and REMOTE_HOST doesn't even work for all hosts. >> >> group3 >> REQUEST_URI vs SCRIPT_NAME vs URL vs ORIG_PATH_INFO vs PHP_SELF >> which all return  /directory/file.php >> purpose: get the virtual url to the php script > > I'll extend your example. We now have a RewriteRule in apache like this: > > RewriteRule ^files/?$ /directory/file.php [L,QSA] > > Which will rewrite /files/... --> /directory/file.php > > REQUEST_URI now contains how it was called by the browser, > '/files/something.php' > SCRIPT_NAME returns path to script (/directory/file.php), set by the > SAPI (apache, ..). > PHP_SELF returns also the path to script (/directory/file.php), but > set by PHP self. > I don't have any ORIG_PATH_INFO on my Ubuntu box, so be careful about this one. > > Recommended: Depends on which you need. I prefer PHP_SELF over > SCRIPT_NAME, but that's more personal choice. > > Matijn > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > Is there ever a case where SCRIPT_NAME does not equal PHP_SELF?