$query="SELECT * FROM `Wallpapers` WHERE (`Category` = '".$id."' OR `Category` IN (SELECT `id` FROM `Categories` WHERE `Parent` = '".$id."') AND `approved` = '0') AND `approved`='0' ORDER BY `ID` DESC LIMIT $limitvalue, $limit";
	$result = mysql_query($query);
	$x = 0;
	if (mysql_num_rows($result) <= 0)
	{
		echo "<center><h1>404 !</h1></center><br /><br />";
	}

script'de 404 uyarisi cikariyor, o kisimda sorun yok fakat 404'in uzerinde

Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/hoo/public_html/aa/sss.php on line 145

hata kodu cikiyor bunu nasil engelleyebilirim ?
Sadece o sayfa icin