Php get previous url

$_SERVER['HTTP_REFERER']

Source: grepper.com

How to get the previous page url in php

//This should be on the previous page
session_start();
$_SESSION["url"] = "the_url_of_page_we_want_to_get_back.php";

//This should be on the current executing page
session_start();
$previous_page_url = $_SESSION["url"];

Source: grepper.com

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