php - 尝试验证 PayPal 支付金额 - MySQL IPN

Question

我正在尝试验证 Pay Pal 订阅 IPN 的 mc_gross 变量。

以下代码一直为我提供 amount_data 的“Resource id #12”值。我要验证的数字是 0.05，它是用户去付款时放在表中的。变量 $id 测试正确并且数字 (0.05) 位于 payment_amount 列中 - 所以我不知道为什么它不能执行此查询。我是 MYSQL 的新手，所以对于任何明显的错误我深表歉意。

$payment_amount = mysql_real_escape_string($_POST['mc_gross']);
   $amount_data = mysql_query ("SELECT * FROM subscriber WHERE payment_amount = '$payment_amount' AND id = '$id' "); 
    if ($amount_data != $_POST['mc_gross']) {
        $errmsg .= "'mc_gross' does not match: ";
        $errmsg .= $_POST['mc_gross']."\n";
        file_put_contents(dirname(__FILE__).'/logs/ipn.log',"\n###AMOUNT Don't MATCH Amount in Database='$payment_amount' Amount in requested='$amount_data'for id '$id'###\n",FILE_APPEND); 
    }

Answer 1

使用mysql_fetch_row()获取$amount_data.Mysql_query()只返回资源id

$amount_data = mysql_query ("SELECT * FROM subscriber WHERE payment_amount = '$payment_amount' AND id = '$id' "); 
$row = mysql_fetch_row($amount_data);

echo $row[0]; 

检查链接 http://php.net/manual/en/function.mysql-fetch-row.php