> if you have the globals setting in your ini file set to "on" > then you can use: $HTTP_REFERER otherwise, I think, it's found > in $_SERVER["HTTP_REFERER"] - just check for something like > that in phpinfo();
Just to be picky, predefined reserved server variables will always exist in both $HTTP_SERVER_VARS and $_SERVER. So, everyone could go through one of these predefined variables regardless of the register_globals value. Of course HTTP_REFERER may or may not exist. And $_SERVER became available in PHP 4.1.0. $HTTP_SERVER_VARS has been around since the 90's :) A related faqt on HTTP_REFERER in PHP can be seen here: Why does $HTTP_REFERER return an empty string? http://www.faqts.com/knowledge_base/view.phtml/aid/31 So regarding the question, do something like so in script.php print $_SERVER['HTTP_REFERER']; print $HTTP_SERVER_VARS['HTTP_REFERER']; Personally I love registering server vars in the scope and many times will do this (on top of the script): if (!ini_get('register_globals')) { extract($HTTP_SERVER_VARS); } In this case, it's safe to use $HTTP_REFERER even if register_globals = off as it will then be created. See also: http://www.php.net/manual/en/language.variables.predefined.php Regards, Philip Olson > -----Original Message----- > From: Alex Shi [mailto:[EMAIL PROTECTED]] > Sent: Monday, May 13, 2002 10:48 AM > To: [EMAIL PROTECTED] > Subject: [PHP] How can obtain referer's name? > > > Hi! > > I want to know how can a script obtain the page name where > it was linked. e.g., there's a link on page.html, and the link > points to script.php, how can script.php know the name of > page.html? Thanks in advance for all answer! > > Alex > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
