Question

I don’t know is there is a PHP function like the ones that start with $_SERVER[”]
That tell user which page he came from, on his current page.

ex. If I was browsing foo.com?id=abc then went to foo.com?id=efg, I need the current page to tell me that I came directly from foo.com?id=abc

I need this code badly, so any help is appreciated.

Answer 1

The $_SERVER variables should not be relied upon to provide accurate answers. You should use PHP Sessions to track what page they come from, and simply update it everytime they go to a new page. Something along the lines of:

session_start();
if(!empty($_SESSION['visited_pages'])) {
  $_SESSION['visited_pages']['prev'] = $_SESSION['visited_pages']['current'];
}else {
  $_SESSION['visited_pages']['prev'] = 'No previous page';
}
$_SESSION['visited_pages']['current'] = $_SERVER['REQUEST_URI'];

Then to access the previous page, access the: $_SESSION[‘visited_pages’][‘prev’]