PHP Mailer-附件文件未打开（当我使用移动浏览器附加时）

Question

我有一个PHP页面可以发送带有附件的电子邮件（职业表格）。 我已经在（ Windows Chrome 浏览器”上正确接收了带有附件的电子邮件。

当我使用 Android移动版-chrome 浏览器时，附件未打开文件大小：0字节 （注意：从手机收到带有附件的邮件-但不支持附件）

谢谢。

HTML：

<form type="submit" enctype="multipart/form-data">
    <input type="file" name="attachment">
    <button name="submit" type="submit">SEND</button>
</form>

PHP：

if(isset($_POST['submit'])){
extract($_POST);

$to="example@email.com";
$msg="email body";

require 'include/PHPMailer_master/src/PHPMailer.php';
require 'include/PHPMailer_master/src/SMTP.php';
require 'include/PHPMailer_master/src/Exception.php';
$mail = new PHPMailer\PHPMailer\PHPMailer(true);

enables exceptions
try {
    //Server settings
    $mail->SMTPDebug = 2;                        
    $mail->isSMTP();                                   
    $mail->Host = 'smtp.siteprotect.com'; 
    $mail->SMTPAuth = true;               
    $mail->Username = 'example@email.com';          
    $mail->Password = 'password';                   
    $mail->SMTPSecure = 'tls';                       
    $mail->Port = 587;                                  

    $mail->setFrom('example@email.com');
    $mail->addAddress($to);     

    $mail->addAttachment($_FILES['attachment']['tmp_name'], 
$_FILES['attachment']['name'] );      

    $mail->isHTML(true);   
    $mail->Subject = 'RESUME - Sales Engineer (from website careers page)';
    $mail->Body    = $msg;
    $mail->AltBody = 'This is the body in plain text for non-HTML mail clients';
    $mail->send();
    echo '<script>alert("Message has been sent");</script>';
} catch (Exception $e) {
    echo '<script>alert("Message not sent");</script>';
    echo 'Message could not be sent. Mailer Error: ', $mail->ErrorInfo;
}
}