Nefunkční Mysql_Fetch_Array()

<?php
$id=$_GET["id"];
$db=@mysql_connect("sql2.webzdarma.cz","AzureDiamond", "hunter2");
$table=@mysql_select_db("fremeni.wz.c9865",$db);
$a=@mysql_query("SELECT `id` FROM `chat` ORDER BY `id` DESC LIMIT 1");
$a=mysql_fetch_array($a)["id"];
if($id<$a)
{
$ne=@mysql_query("SELECT * FROM `chat` ORDER BY `id` DESC LIMIT ".$a-$id);
echo $a-$id;
while($zaznam=mysql_fetch_array($ne)){
    echo $a."%5-5%<div class='message'><span class='jmeno'>".$zaznam["name"]."</span>: ".$zaznam["text"]."<span class='time'>".$zaznam["time"]."</span></div>";
}} 


?>