Ersin Acar » referer http://ersinacar.com PHP and Web Technologies Freak Fri, 06 Jan 2012 14:19:52 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Check user referer http://ersinacar.com/check-user-referer_46.html http://ersinacar.com/check-user-referer_46.html#comments Tue, 07 Apr 2009 23:00:52 +0000 Ersin Acar http://ersinacar.com/check-user-referer_46.html It is sometimes a good idea to find out where users can come from. When PHP is run the $_SERVER superglobal is always available and if the user has clicked on a link and landed on your page then the HTTP_REFERER value will be set. You can retrieve it like this.

if ( isset($_SERVER[ HTTP_REFERER ]) ) {
 echo $_SERVER['HTTP_REFERER'];
}

Of course you might want to do something useful with this. For example, you might want to know what link a user clicked on when they broke your application.

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