Question

每次我只是尝试运行此脚本时，我会不断收到这些错误消息

（警告：mysql_num_rows（）：提供的参数不是有效的MySQL /home/a9016774/public_html/cronjob/blast_script.php中的结果资源在第9行）

和

（警告：mysql_fetch_array（）：提供的参数不是一个有效的MySQL结果资源第21行/home/a9016774/public_html/cronjob/blast_script.php。）

这是代码：

<?php
/* -------------------------------------------------------------------
Script written by Adam Khoury @ www.developphp.com
                          January 1, 2010
Please retain this credit when displaying this code online 
---------------------------------------------------------------------- */
include_once "../connect_to_mysql.php";
$sql = mysql_query("SELECT * FROM newsletter WHERE received='0' LIMIT 20");
$numRows = mysql_num_rows($sql); // Added for "End Campaign Check" at the bottom of this file(not shown on the video)
$mail_body = '';
while($row = mysql_fetch_array($sql)){
    $id = $row["id"];
    $email = $row["email"];
    $name = $row["name"];

    $mail_body = '<html>
<body style="background-color:#CCC; color:#000; font-family: Arial, Helvetica, sans-serif; line-height:1.8em;">
<h3><a href="http://newsletter.netau.net/"><img src="http://www.yoursite.com/images/logo.png" alt="DevelopPHP" width="216" height="36" border="0"></a> Newsletter
</h3>
<p>Hello ' . $name . ',</p>
<p>You can make this out to be just like most any web page or design format you require using HTML and CSS.</p>
<p>~Adam @ DevelopPHP</p>
<hr>
<p>To opt out of receiving this newsletter,  <a href="http://newsletter.netau.net/optout.php?e=' . $email . '">click here</a> and we will remove you from the listing immediately.</p>
</body>
</html>';
    $subject = "Develop PHP Newsletter";
    $headers  = "From:newsletter@newsletter.netau.net\r\n";
    $headers .= "Content-type: text/html\r\n";
    $to = "$email";

    $mail_result = mail($to, $subject, $mail_body, $headers);

    if ($mail_result) {
        mysql_query("UPDATE newsletter SET received='1' WHERE email='$email' LIMIT 1");
    } else {
       // this else statement can be used to write into an error log if the mail function fails
       // It can also be removed if you do not need error logging
    }

}
?>
<?php
// This section is script I discussed adding to this file on video
// This section is for sending the site owner a message informing them that
// all people in the database have been sent the newsletter for the current campaign
if ($numRows == 0) { // $numRows is set on line 4 using the existing query

     $subj = "Newsletter Campaign Has Ended";
     $body = "The current newsletter campaign has ended. All have been sent the newsletter.";
     $hdr  = "From:newsletter@newsletter.netau.net\r\n";
     $hdr .= "Content-type: text/html\r\n";
     mail("austinbevon79@gmail.com", $subj, $body, $hdr);

}
// End Check Section
?>

请帮助并谢谢你！

Answer 1

在执行SQL期间发生错误时，

mysql_query返回False。并且False不是函数mysql_num_rows和mysql_fetch_array所期望的mysql资源，这就是这里发生的事情。您可能没有必要的表格newsletter，或者表格缺少列received。

您可以通过添加

来查看错误

echo mysql_error($sql);

这一行之后：

$sql = mysql_query("SELECT * FROM newsletter WHERE received='0' LIMIT 20");

通讯爆炸剧本未能发出信件

1 个答案: