$ _SERVER ['HTTP_REFERER']总是空的 - PHP

Question

<?php
$camefrom =$_SERVER['HTTP_REFERER'];
if ((substr($camefrom,0,26) == "http://www.fromperson.com")
header( 'Location: http://toperson.com' ) ;
?>

I need to redirect to www.to.com if the request was made from www.from.com. This code resides in www.thridperson.com/index.php

$camefrom is always empty.

I have read that $_SERVER['HTTP_REFERER'] is not reliable. Is there any other way to perform this redirection?

Note: I have lost the access to old domain i.e fromperson.com. So, I cannot change this redirection logic it has to be done this way and it has to done only in thirdperson.com/index/php

Answer 1

No way to do according to my requirement