How can I find out where the redirect is coming from?

Question

PHP

When entering a certain page of the site, it redirects from it to a non-existent url that looks like http://site/0 . There is nothing left in the page code. In what way it is possible to define from what place this crap is caused?

Answer 1

you put www.telerik.com/fiddler
you put Noscript, in FF you find
who makes the redirect - php or loadable JS
js - it's clear
in php you turn off the includes and repeat until you are completely satisfied
, keep in mind - it can be entered in the database, i.e. see if anything is taken from the database

Answer 2

$_SERVER['HTTP_REFERER'] contains this information