Hi I have a common form page where a user submits an enquiry ex: enquiry.html This enquiry.html will call a php file called processing.php in the form action for processing the enquiry and inserting into database. There are many ways a user can reach enquiry.html for example from aboutus.html contactus.html etc My question is how can the processing.php file track which was the previous page a user was browsing before viewing and submitting an enquiry from enquiry.html This would help me to keep track of the source of enquiry.html Any help will be greatly appreciated.