php - Sql 查询返回对象

Question

$sql = "SELECT email FROM users WHERE username='$User'";
    $result = $conn->query($sql);
    if($result->num_rows > 0){
        while($row = $result->fetch_assoc()){
            $email = $row["email"];
        }
    }
    echo $email;
    require_once("class.phpmailer.php");;
    $email = new PHPMailer();
    $email->From = "clientinformation@apbdispatch.com";
    $email->Subject = "$from";
    $email->AddAddress("$email");

当回显 $email 时，它会返回此人的电子邮件地址。但是，当将其放在双引号中时，我收到一条错误消息，指出对象无法转换为字符串。

感谢您的帮助，

目标mmmmmmmm

Answer 1

发现问题:

检索电子邮件:

        $email = $row["email"];

实例化您的邮件程序:

$email = new PHPMailer();
  ^---oops, now your database result is destroyed.