Like 404 anomalies, how to locate? The study of nearly 3 hours without fruit, if it is difficult to remove, will not eat

Like 404 error, how to locate? The study of nearly 3 hours without fruit, if it is difficult to remove, will inadvertently eat.

Www.v.w1.com is accessible, however, no WC this path, so http://v.w1.com/wc/test.html is not open, will return a 404 error.
But
I'm going to make it, turn all the http://v.w1.com/wc/test.html
In www.mytest.com/index.php?url=http://v.w1.com/wc/test.html

I tried several times and there was a dead loop directed.
The mother of my failure:
1. Take get_heards, must be able to access the normal?
2. Use htaccess bar, take parameters also not easy to get.

Thank you, sir.
------Solution--------------------
Apache
ErrorDocument 404/404.php

------Solution--------------------
Apache
ErrorDocument 404 http://www.mytest.com/index.php


You write this first, see if you can carry it to index.php.

And then this PHP inside Print_r ($_server), according to the general, this array can get the URL of the
------Solution--------------------
A regular expression can be used to write a rewrite rule, as long as the path to the WC is matched to the way you jump, so you tried?

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