can I update more than one field in the same query, for example mysql_query("update table set field1 = 'blah', field2 = 'blah2' where id = '49")
Yes you definately should be able to:
result = mysql_querry("UPDATE Users SET field1 = '$field1value', field2 = 'field2value' WHERE ID = '$ID_array[$x]'") or die(mysql_error);
Enjoy!
-Jrottman
