+ return is_array($myrow) ? $myrow[0] : false;
+}
+
+//--------------------------------------------------------------------------------------
+
+function get_purchase_cost($stock_id)
+{
+ $sql = "SELECT purchase_cost
+ FROM ".TB_PREF."stock_master
+ WHERE stock_id=".db_escape($stock_id);
+ $result = db_query($sql, "The purchase cost cannot be retrieved");
+
+ $myrow = db_fetch_row($result);
+
+ return is_array($myrow) ? $myrow[0] : false;