Question

我正在尝试创建一个脚本，该脚本将通过电子邮件发送从我正在开发的iphone应用程序上传的图像。

我已经能够通过脚本向我发送带附件的电子邮件。但是，附件总是0kb。

这是我的代码：

// Standard email info


$to = 'example@example.com'; 
 $subject = 'Email with an image attached'; 

 // This variable will be used when declaring the "boundaries"
 // for the different sections of the email
 $boundary = md5(date('r', time()));

 //Initial Headers 
 $headers = "MIME-Version: 1.0\r\n"; // <- the "\r\n" indicate a carriage return and newline, respectively
 $headers .= "From: <example@example.com>\r\n";
 $headers .= "Content-Type: multipart/mixed; boundary=" . $boundary . "\r\n"; // <- This is 
 // saying the there will be more than one (a "mix") of Content Types in this email.
 // The "boundary" value will indicate when each content type will start

  //First Content Type
 $message = "\r\n\r\n--" . $boundary . "\r\n"; // <- This indicates that I'm going to start
 // declaring headers specific to this section of the email. 
 // MAKE SURE there's only ONE(1) "\r\n" between the above boundry and the first header below (Content-Type)
 $message .= "Content-type: text/plain; charset=\"iso-8859-1\"\r\n"; // <- Here I'm saying this content should be plain text
 $message .= "Content-Transfer-Encoding: 7bit\r\n\r\n";

 // Body of the email for the headers I just declared 
 $message .= "Someone filled out the form. See their info below:\r\n";
 $message .= "Name:";

//Second Content Type
 $message .= "\r\n\r\n--" . $boundary . "\r\n"; // <- This idicates that I'm going to start 
 // declaring some more headers for the content below
 // MAKE SURE there's only ONE(1) "\r\n" between the above boundry and the first header below (Content-Type)
 $message .= "Content-type: image/jpeg\r\n"; // <- Here I'm saying that this Content Type is for a JPEG image
 $message .= "Content-Transfer-Encoding: base64\r\n"; // <- this is saying that this section's content will be base64 Encoded
 $message .= "Content-Disposition: attachment; filename=\"Image.jpg\"\r\n"; // <- This is saying the content below should be an attachment and gives it a file name

 // The base64_encode below is necessary because this is a file. 
 $message .= base64_encode(file_get_contents($_FILES["userfile"]["name"])); 

 $message .= "\r\n\r\n--" . $boundary . "--"; // <- This indicates the end of the boundries. Notice the additional "--" after the boundry's value.

 // Send the email using "mail()".
 // Adding the "$mail_sent = " before "mail()" will store TRUE in $mail_sent if the email is sent successfully
 // Adding the "@" sign before "mail()" will disable error display so users
 // won't see the actual error info if it fails, just "Mail failed".
 $mail_sent = @mail($to, $subject, $message, $headers); 

 //Check to see if the email was sent successfully ($mail_sent = true).
 //If so, display "Mail Sent" to the screen, else display "Mail Failed".
 echo $mail_sent ? "Mail sent" : "Mail failed";

一切正常，但附件是0kb。

感谢任何帮助。

感谢。

Answer 1

        // to, from, subject, message body, attachment filename, etc.
        $to = "to@to.com";
        $from = "from@from.com";
        $subject = "subject";
        $message = "this is the message body";
        $filename = "/home/user/file.jpeg";
        $fname = "file.jpeg";

        $headers = "From: $from"; 
        // boundary 
        $semi_rand = md5(time()); 
        $mime_boundary = "==Multipart_Boundary_x{$semi_rand}x"; 

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

        // multipart 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"; 
        $message .= "--{$mime_boundary}\n";

        // preparing attachments            
            $file = fopen($filename,"rb");
            $data = fread($file,filesize($filename));
            fclose($file);
            $data = chunk_split(base64_encode($data));
            $message .= "Content-Type: {\"application/octet-stream\"};\n" . " name=\"".$fname."\"\n" . 
            "Content-Disposition: attachment;\n" . " filename=\"$fname\"\n" . 
            "Content-Transfer-Encoding: base64\n\n" . $data . "\n\n";
            $message .= "--{$mime_boundary}--\n";


        // send
        //print $message;

        $ok = @mail($to, $subject, $message, $headers, "-f " . $from);

Answer 2

虽然有固定的功能，但对于初级程序员来说，这是一个很棒的练习！

写得很好mti2935。实际阅读并不仅仅是剪切和粘贴，这对人们有好处。如果您使用php发送电子邮件，您应该了解这些基本概念。

掩盖真实代码可能会有一些疏忽：

第23行应为：

$data = fread($file,filesize($filename));

也就是说，$fname应为$filename。

第26行应为：

$message .= "Content-Type: {\"application/octet-stream\"};\n" . " name=\"".$fname."\"\n" .

$x和$files[$x]都未定义。

@ Thomas Spade：我想提醒您应该始终清理输入（电子邮件地址）。

Answer 3

关闭的mime边界应以--结尾，因此第29行应为：

$message .= "--{$mime_boundary}--\n";

Answer 4

<?php

$url = "https://c.xkcd.com/random/comic/";
$ch  = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
// Must be set to true so that PHP follows any "Location:" header.
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// $a will contain all headers.
$a = curl_exec($ch);
// This is what you need, it will return you the last effective URL.
$url = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);

$str  = file_get_contents($url.'info.0.json');
$json = json_decode($str, true);

// Get file info.
$imageTitle = $json['title'];

// Image url.
$imageUrl = $json['img'];

// Image alt text.
$imageAlt = $json['alt'];

// Image file.
$imageFile = file_get_contents($imageUrl);

$tokens = explode('/', $imageUrl);

// File name.
$fileName = $tokens[(count($tokens) - 1)];

// File extension.
$ext = explode(".", $fileName);

// File type.
$fileType = $ext[1];

// File size.
$header = get_headers($imageUrl, true);

$fileSize = $header['Content-Length'];




$to      = 'name@example.com';
$subject = "Enjoy reading today's most interesting XKCD comics";
$message = '
<html>
<head>
<title>Your email '.$to.' is listed in our XKCD comics subscribers.</title>
</head>
<body> 
    <h1>'.$imageTitle.'</h1>
    <img src='.$imageUrl.' alt='.$imageAlt.'>
</body>
</html>';

// File.
$content = chunk_split(base64_encode($imageFile));

// A random hash will be necessary to send mixed content.
$semiRand     = md5(time());
$mimeBoundary = '==Multipart_Boundary_x{$semiRand}x';

// Carriage return type (RFC).
$eol = "\r\n";

$headers  = 'Reply-To: Name <name@example.com>'.$eol;
$headers .= 'Return-Path: Name <name@example.com>'.$eol;
$headers .= 'From: Name <name@example.com>'.$eol;
$headers .= 'Organization: Hostinger'.$eol;
$headers  = 'MIME-Version: 1.0'.$eol;
$headers .= "Content-Type: multipart/mixed; boundary=\"{$mimeBoundary}\"".$eol;
$headers .= 'Content-Transfer-Encoding: 7bit'.$eol;
$headers .= 'X-Priority: 3'.$eol;
$headers .= 'X-Mailer: PHP'.phpversion().$eol;

// Message.
$body  = '--'.$mimeBoundary.$eol;
$body .= "Content-Type: text/html; charset=\"UTF-8\"".$eol;
$body .= 'Content-Transfer-Encoding: 7bit'.$eol;
$body .= $message.$eol;

// Attachment.
$body .= '--'.$mimeBoundary.$eol;
$body .= "Content-Type:{$fileType}; name=\"{$fileName}\"".$eol;
$body .= 'Content-Transfer-Encoding: base64'.$eol;
$body .= "Content-disposition: attachment; filename=\"{$fileName}\"".$eol;
$body .= 'X-Attachment-Id: '.rand(1000, 99999).$eol;
$body .= $content.$eol;
$body .= '--'.$mimeBoundary.'--';

$success = mail($to, $subject, $body, $headers);

if ($success === false) {
    echo '<h3>Failure</h3>';
    echo '<p>Failed to send email to '.$to.'</p>';
} else {
    echo '<p>Your email has been sent to '.$to.' successfully.</p>';
}

PHP发送带有图像附件的电子邮件

4 个答案: