【发布时间】：2013-08-10 21:56:43
【问题描述】：
我在我的贝宝捐赠网页中收到此错误，我不知道如何阻止它。
Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/sixthr6/public_html/donation/donate.php on line 116
我现在正在运行这是演示模式，直到我找到解决此问题的方法。我有一个带有正确表的自定义 mySQL 数据库设置，所以我不知道为什么当我在 DEMO 模式下进行虚假捐赠时，它不会将评论保存到主页而只是抛出该错误。
这是有问题的代码
<?php
require "config.php";
require "connect.php";
// Determining the URL of the page:
$url = 'http://'.$_SERVER['SERVER_NAME'].dirname($_SERVER["REQUEST_URI"]);
// Fetching the number and the sum of the donations:
list($number,$sum) = mysql_fetch_array(mysql_query("SELECT COUNT(*),SUM(amount) FROM dc_donations"));
// Calculating how many percent of the goal were met:
$percent = round(min(100*($sum/$goal),100));
// Building a URL with Google's Chart API:
$chartURL = 'http://chart.apis.google.com/chart?chf=bg,s,f9faf7&cht=p&chd=t:'.$percent.',-'.(100-$percent).'&chs=200x200&chco=639600&chp=1.57';
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Donation Center | Tutorialzine demo</title>
<link rel="stylesheet" type="text/css" href="styles.css" />
</head>
<body>
<div id="main">
<h1>Donation Center</h1>
<h2>Show Your Support for our Cause</h2>
<div class="lightSection">
<h3>Hello, dear visitor!</h3>
<p>This is Tutorialzine's Donation Center. It utilizes PayPal's APIs to bring you a fully fledged donation solution. It is currently in <strong>Demo Mode</strong>, which means that PayPal is bypassed and you can donate as much as you want to test the functionality. You can, however, just change a variable in the config.php file to enable real donations.</p>
<!-- The PayPal Donation Button -->
<form action="<?php echo $payPalURL?>" method="post" class="payPalForm">
<div>
<input type="hidden" name="cmd" value="_donations" />
<input type="hidden" name="item_name" value="Donation" />
<!-- Your PayPal email: -->
<input type="hidden" name="business" value="<?php echo $myPayPalEmail?>" />
<!-- PayPal will send an IPN notification to this URL: -->
<input type="hidden" name="notify_url" value="<?php echo $url.'/ipn.php'?>" />
<!-- The return page to which the user is navigated after the donations is complete: -->
<input type="hidden" name="return" value="<?php echo $url.'/thankyou.php'?>" />
<!-- Signifies that the transaction data will be passed to the return page by POST -->
<input type="hidden" name="rm" value="2" />
<!-- General configuration variables for the paypal landing page. Consult
http://www.paypal.com/IntegrationCenter/ic_std-variable-ref-donate.html for more info -->
<input type="hidden" name="no_note" value="1" />
<input type="hidden" name="cbt" value="Go Back To The Site" />
<input type="hidden" name="no_shipping" value="1" />
<input type="hidden" name="lc" value="US" />
<input type="hidden" name="currency_code" value="USD" />
<!-- The amount of the transaction: -->
<select name="amount">
<option value="50">$50</option>
<option value="20">$20</option>
<option value="10" selected="selected">$10</option>
<option value="5">$5</option>
<option value="2">$2</option>
<option value="1">$1</option>
</select>
<input type="hidden" name="bn" value="PP-DonationsBF:btn_donate_LG.gif:NonHostedGuest" />
<!-- You can change the image of the button: -->
<input type="image" src="https://www.paypal.com/en_US/i/btn/btn_donate_LG.gif" name="submit" alt="PayPal - The safer, easier way to pay online!" />
<img alt="" src="https://www.paypal.com/en_US/i/scr/pixel.gif" width="1" height="1" />
</div>
</form>
</div>
<!-- Setting the Google Chart API address as the background image of the div: -->
<div class="chart" style="background:url('<?php echo $chartURL?>');">
Our Goal
</div>
<div class="donations">
<?php echo $percent?>% done
</div>
<div class="clear"></div>
<div class="donors">
<h3>The Donor List</h3>
<h4>Folks Who Showed Their Support</h4>
<div class="comments">
<?php
$comments = mysql_query("SELECT * FROM dc_comments ORDER BY id DESC");
// Building the Donor List:
if(mysql_num_rows($comments))
{
while($row = mysql_fetch_assoc($comments))
{
?>
<div class="entry">
<p class="comment">
<?php
echo nl2br($row['message']); // Converting the newlines of the comment to <br /> tags
?>
<span class="tip"></span>
</p>
<div class="name">
<?php echo $row['name']?> <a class="url" href="<?php echo $row['url']?>"><?php echo $row['url']?></a>
</div>
</div>
<?php
}
}
?>
</div> <!-- Closing the comments div -->
</div> <!-- Closing the donors div -->
</div> <!-- Closing the main div -->
</body>
</html>
我正在使用来自该网站http://tutorialzine.com/2010/05/donation-center-php-mysql-paypal-api/ 的编码，他们的演示工作正常，但是当我使用我的并设置它时，他们仍然会抛出错误。
【问题讨论】：
-
$cmets 的值是多少？
-
在执行任何操作之前，请删除静音运算符 (
@) 的 所有 个实例。如果您只是压制告诉您正在发生的事情的错误，我们无法为您提供帮助。 -
不要使用 mysql_* 它不推荐使用 PDO 或 mysqli 代替
-
你的查询，那 num 行正在使用，失败，调试一下
-
我删除了所有 @ 现在我收到此错误警告：mysql_fetch_array()：提供的参数不是第 10 行 /home/sixthr6/public_html/donation/donate.php 中的有效 MySQL 结果资源
标签： php