how to parse $_REQUEST?
<p>here i am checking for and getting part of the request, (the ids). i also print out the entire request:</p>

<pre><code>if (isset($_REQUEST['ids'])){
    $amount = sizeof($_REQUEST['ids']);
    print_r($_REQUEST);
    echo "&lt;br&gt;$amount invitations Successfully Sent";
}
</code></pre>

<p>this is how  the entire $_REQUEST prints out:</p>

<pre><code>Array
(
    [mfs_typeahead_req_form_4cf74f96db3688507476560] =&gt; Start Typing a Name
    [ids] =&gt; Array
        (
            [0] =&gt; 510149460
        )
    [fbs_258181898823] =&gt; \"access_token=258181898823|2.q_qb_yoReO0_xc4H8PxKRQ__.3600.1291280400-100000664203700|LqtGr_OiJTASGmek61awxmxfvFk&amp;expires=1291280400&amp;secret=85eTEELZj8lkV82V_PwRSA__&amp;session_key=2.q_qb_yoReO0_xc4H8PxKRQ__.3600.1291280400-100000664203700&amp;sig=d4cc0e4c0992ea29c0adfd60dc27185b&amp;uid=100000664203700\"
)
</code></pre>

<p>i need to parse the part at the end: &amp;uid=100000664203700, specifically '100000664203700'</p>
