Fatal error: Maximum execution time of 30 seconds exceeded



non va:
if (!$limit) {$limit=0; }
if ($limit>0) {
$limit =50;

echo "<a href=TabellaHD.php?limit=$limit>Pagina precedente</a>";
}


$query = "SELECT count(Matricola) AS total FROM Call";
$result = mysql_query($query, $db);
$row = mysql_fetch_array($result);
$limit+=50*2;
if ($limit < $row['total'])
echo "<a href=TabellaHD.php?limit=$limit>Pagina successiva</a>";