+
+/*
+ Check whether sales order is issued in prepaid mode and already opened
+*/
+
+function is_prepaid_order_open($order_no)
+{
+ $sql = "SELECT count(*)
+ FROM ".TB_PREF."sales_orders o,
+ ((SELECT trans_no_to FROM ".TB_PREF."cust_allocations
+ WHERE trans_type_to=".ST_SALESORDER." AND trans_no_to=".db_escape($order_no).")
+ UNION
+ (SELECT order_ FROM ".TB_PREF."debtor_trans
+ WHERE type=".ST_SALESINVOICE." AND order_=".db_escape($order_no).")) related
+ WHERE
+ o.prep_amount>0
+ AND o.trans_type = ".ST_SALESORDER."
+ AND o.order_no = " . db_escape($order_no);
+
+ $result = db_fetch(db_query($sql, "cannot check prepaid order open"));
+
+ return $result[0];
+}