$acikalamma = $_POST["aciklama"];
$urunkoduu = $_POST["urunkodu"];
if($urunkodu!=""){
$sor = mysql_query("SELECT * FROM urunss WHERE urunkodu LIKE '%$urunkoduu%' ORDER BY id ASC");
}else{
$sor = mysql_query("SELECT * FROM urunss WHERE aciklamasi LIKE '%$aciklamma%' ORDER BY id ASC");
}
$toplamsonuc = mysql_num_rows($sor);
if( $toplamsonuc > 0){Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given in on line 16