rtrim help

[neridaj]

Hey,

I don't understand why rtrim() isn't returning the referring page without the query string:

echo rtrim($_SERVER['HTTP_REFERER'], "?");

Thanks,

J

[dagon]

it would only remove the question mark, if it was the last character of the string

[dagon]

and never ever use $_SERVER['HTTP_REFERER'] its sent by the client so totally unreliable (my fire wall strips it)

[neridaj]

what's the alternative to $_SERVER['HTTP_REFERER']?

[dagon]

have look at what you have to work with:

print_r($_SERVER);

[bradgrafelman]

If your application absolutely depends on knowing what the 'referring page' was, then using sessions is the best answer. As dagon points out, the $_SERVER['HTTP_REFERER'] variable isn't reliable, since the Referer HTTP header is not only optional but completely un-verified/sanitized.

As for the solution, here's one possibility:

$referrer = preg_replace('/\?.*/', '', $_SERVER['HTTP_REFERER']);