I need a more efficient way of checking if multiple $_POST parameters isset
<p>I have these variables, and I need to check if all of them isset(). I feel there <em>has</em> to be a more efficient way of checking them rather than one at a time.</p>

<pre><code>$jdmMethod = $_POST['jdmMethod'];
$cmdMethod = $_POST['cmdMethod'];
$vbsMethod = $_POST['vbsMethod'];
$blankPage = $_POST['blankPage'];
$facebook = $_POST['facebook'];
$tinychat = $_POST['tinychat'];
$runescape = $_POST['runescape'];
$fileUrl = escapeshellcmd($_POST['fileUrl']);
$redirectUrl = escapeshellcmd($_POST['redirectUrl']);
$fileName = escapeshellcmd($_POST['fileName']);
$appData = $_POST['appData'];
$tempData = $_POST['tempData'];
$userProfile = $_POST['userProfile'];
$userName = $_POST['userName'];
</code></pre>
