Firstpage.php < form method = "post" action = "secondpage.php" > < input type = "text" id = "amount" name = "amount" value = "" /> < select id = "currencyCode" name = "currencyCode" > < option value = "524" > NPR </ option > < option value = "840" > Dollar </ option > </ select > < textarea name = "productDesc" id = "productDesc" ></ textarea > < input type = "submit" id = "submit" name = "submit" value = "Submit data" /> </ form > Secondpage.php <?php $var_value = $_POST [ 'amount' ]; $currencyCode = $_POST [ 'currencyCode' ]; $productdesc = $_POST [ 'productDesc' ]; $cost = $var_value * 100 ; //product_cost//;// $รง = str_pad(rand(1000...