error returning information using php - php

Question

I am steps away from finishing this project, I seem to have a problem with my logic in my fetchMessage() function, I am passing in the session_id however I am getting nothing returned here is my function code
function fetchMessages($session)
{
$get = ("SELECT * FROM chatRoom WHERE session_id = '$session'");
$hold = mysql_query($get, $con);
if($hold)
{
return mysql_fetch_array($hold);
}
}
the code calling this function is
<?php
include 'core/conection.php';
include 'function.php';
if(isset($_POST['method']) === true && empty($_POST['method']) === false)
{
$method = trim($_POST['method']);
$session = trim($_POST['session']);
if($method === 'fetch')
{
$messages = fetchMessages($session);
if(empty($messages) === true)
{
echo 'A representative will be with you shortly';
echo '<br />';
echo $session;
}else
{
foreach($messages as $message)
{
$ts = $message['timestamp'];
?>
<div class = "message">
<?php echo date('n-j-Y h:i:s a', $ts); ?>
<?php echo $message['username']; ?>
says:<p><?php echo nl2br($message['message']); ?></p>
</div>
<?php
}
}
}
}
?>
I know it is making it at least this far because at this line
if(empty($messages) === true)
{
echo 'A representative will be with you shortly';
echo '<br />';
echo $session;
}
it displays the correct session_id i have a fealing it is either my fetchMessages function that is wrong or the html code to display the results that is wrong.