Strange MySQL problem with multiple consequent inserts

Hi all, i have a problem that is drivin me nuts... i tried to solve it in many different ways but the behaviour is so strange that i cannot actually figure out what could cause this. The following code: $result = mysql_query ("INSERT INTO Ordini (ORDERID, DATA, RAGSOC, INDIRIZZO, CAP, CITTA, PROVINCIA, NAZIONE, EU, TELEFONO, FAX, EMAIL, ICQUIN, PARTITAIVA, MODPAGAMENTO, IP) VALUES ('$ORDERID', $DATA', '$RAGIONESOCIALE', '$INDIRIZZO', '$CAP', '$CITTA', '$PV', 'IT', 1, '$TELEFONO', '$FAX', '$EMAIL', '$ICQUIN', '$PIVACFISC', '$PAYMENT', '$CURRENTIP')", $db) or die ("wrong query : " . mysql_error()); print "<BR>Ordini Table : Insert ID : " . mysql_insert_id(); print "<BR>Result : $result<BR>"; foreach ($dettaglio as $elemento) { $parti = explode("|", $elemento); $result = mysql_query ("INSERT INTO Dettaglio (ORDERID, PARTID, DESCRIZIONE, PREZZOIE, ALIVA) VALUES ('$ORDERID', '$parti[0]', '$parti[1]', '$parti[2]', '20')", $db) or die (mysql_error()); print "<BR>Detail Table - Insert ID : " . mysql_insert_id(); print "<BR>Result : $result<BR>"; } is supposed to add several records to my MySQL table. As you notice, it is written to add a first record (order record) and a subset of records realted to that order (in the foreach cycle). I tried with 1 order and 5 details, and add OR the order OR the details (always all the detail records are added in this case)... never both together. The strange thing is that the output to the browser is the following: Ordini Table : Insert ID : 0 Result : 1 Detail Table - Insert ID : 1 Result : 1 Detail Table - Insert ID : 2 Result : 1 Detail Table - Insert ID : 3 Result : 1 Detail Table - Insert ID : 4 Result : 1 Detail Table - Insert ID : 5 Result : 1 So, from what i can understand, the queries are issued correctly (result is always true) and also the insert_id is updated correctly. What could cause the random insert of the records? Thanks in advance for any suggestion :) Stefano