PHP link/page refferer
<p>I don't know how to properly explain this so please bear with me:</p>

<ol>
<li>When a new clicks on create new post/thread/reply .etc, and they are taken to the create new xzy page, they then fill this out the form.</li>
<li>When they fill this out, this are taken to a login/register form.</li>
<li>After they have register/logged-in, they are taken back to the page whence they came (create new xyz or other). How would this be done in php? A link referrer of sorts.</li>
</ol>
