PHP不发送带有附件的邮件

Question

我有一个 HTML 注册/联系表单，目前通过电子邮件发送字段，没问题。 我遇到的问题是将上传的文件附加到电子邮件中。

使用我目前用于文件的 PHP，正在发送电子邮件，但 MIME 信息在电子邮件中，我收到错误消息，表明该消息“结构错误，无法完全检查”并且该文件未附加到电子邮件中。

<?php
if (isset($_POST['submit'])) {

    //if ($_SERVER['submit']=="POST"){

    $to = "me@mymail.com";                           // Email address
    $from = $_POST['text_96'];                        // sender's Email
    $fullname = $_POST['text_95'];                    // users fullname
    $email = $_POST['text_96'];                        // users email address
    $dob = $_POST['date_12'];                            // Date of birth
    $addr = $_POST['textarea_31'];                    // Address
    $maths = $_POST['text_93'];                        // Maths 
    $english = $_POST['text_31'];                        // English 
    $holidayst = $_POST['date_74'];                    // Holiday1
    $holidayend = $_POST['date_91'];                    // Holiday2
    $distance = $_POST['number_58'];                    // Dist
    $awayhome = $_POST['selectlist_90'];                // AFW [boolean]
    $reasontext = $_POST['textarea_60'];                // 100 word answer
    $subject = "New application submission";           // subject of email

    $mssg = "New submission from " . $email . "\n\n" . "Full name: " . $fullname . "\nDOB: " . $dob . "\nAddress:\n" . $addr . "\n\nMaths: " . $maths . "\nEnglish: " . $english . "\nHoliday start: " . $holidayst . "\nHoliday end: " . $holidayend . "\nDistance to travel: " . $distance . "km" . "\nAFH?: " . $awayhome . "\nAppr choices: " . $apprent . "\n\nReason for applying: " . $reasontext . "\n";

    foreach ($_POST['checkbox'] as $key => $val) {        // Gets list of appr
        $apprent .= $val . ' ';                        // 
    }

    //  --  --  --  \\

    $fileatt = $_FILES['file'];
    //$fileatttype = "application/pdf";
    //$fileattname = "newname.pdf";
    $headers = "From: $from";
    $file = fopen($fileatt, 'rb');
    $data = fread($file, filesize($fileatt));
    fclose($file);
    $semi_rand = md5(time());
    $mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";

    $headers .= "\nMIME-Version: 1.0\n" .
        "Content-Type: multipart/mixed;\n" .
        " boundary=\"{$mime_boundary}\"";

    $message = "This is a multi-part message in MIME format.\n\n" .
        "-{$mime_boundary}\n" .
        "Content-Type: text/plain; charset=\"iso-8859-1\n" .
        "Content-Transfer-Encoding: 7bit\n\n" .

        $message .= "\n\n";

    $data = chunk_split(base64_encode($data));

    $message .= "–{$mime_boundary}\n" .
        "Content-Type: {$fileatttype};\n" .
        " name=\"{$fileattname}\"\n" .
        "Content-Disposition: attachment;\n" .
        " filename=\"{$fileattname}\"\n" .
        "Content-Transfer-Encoding: base64\n\n" . $mssg .

        $data . "\n\n" .
        "-{$mime_boundary}-\n";

    if (mail($to, $subject, $message, $headers)) {
        $message = NULL;
        $headers = NULL;
        header('Location: application_submitted.html');
    } else {
        header('Location: index.php');

        //\\    --  --  --  //

        //$headers = "From:" . $from;
        //@mail($to,$subject,$message,$headers);
        // You can also use header('Location: thank_you.php'); to redirect to another page.
        //$message = NULL;
        //$headers = NULL;
        //header('Location: application_submitted.html');

        //if (@mail($to, $subject, $message, $headers))
        //$message = NULL;
        //$headers = NULL;
        //header('Location: application_submitted.html');
        //else
        //echo "Failed to send";
    }
}
?>

请问如何在此电子邮件中附加文件并发送而不出现上述错误？

非常感谢您提供的任何帮助和帮助！

Answer 1

您的代码太损坏，无法在此处修复，但您需要关注以下两个主要错误：

1. 上传文件的引用不正确
2. 您的标头没有正确分隔。

首先，您没有使用$_FILES['file'] 引用上传的文件，它的位置存储在$_FILES['file']['tmp_name'] 中。这是一个有用的教程：PHP 5 File Upload on W3schools。

其次，标题应使用\r\n 分隔。 mail() 函数文档提供了这方面的有用信息以及安全提示。