Problem displaying an array

I am having a problem and I am not sure what to do. I am new to PHP
and was wondering if someone can help me on my problem I know it
might be something simple but I am stuck

CODE:

while (!$rs->EOF) {

$eventName = $rs->Fields("Subject");
$sTime = $rs->Fields("Start");
$sTimeStamp = strtotime($sTime);
$eTime = $rs->Fields("End");
$eTimeStamp = strtotime($eTime);
$roomNum = $rs->Fields("Location");


array_push($eventArray, $eventName);

echo $eventArray[$rowNum]."<br />";


$rowNum += 1;
$rs->MoveNext();
}

echo "<br /><br />";

echo $eventArray[2]."<br />";

When I try to display a value in one of the array fields it only works
inside the while loop. When I use the same line of code it doesn't
seem to work.

Thank you for your help,