这个php myqsl代码有什么问题

Question

我只想从客户表中收到一封电子邮件,然后向该电子邮件发送消息.我收到此错误"警告:mysql_num_rows()期望参数1为"我的代码如下:

<?php
       $mysql = mysql_connect("localhost", "hname", "passs", "dbname");

       $getusers = mysql_query("SELECT * FROM customer");
       while ($row = mysql_fetch_array($result)) {
       sendMail($row['email']);
       }
       mysql_free_result($result);
       function sendMail($to){
       $subject = 'the subject';
       $message = 'hello';
       $headers = 'From: webmaster@example.com' . "\r\n" .
       'Reply-To: webmaster@example.com' . "\r\n" .
       'X-Mailer: PHP/' . phpversion();
       mail($to, $subject, $message, $headers);
       }
?>

Answer 1

您正在建立myslqi连接,但之后使用mysql_*(否i)功能.你应该全部使用mysqli.