PHP邮件发送附件无法打开

Question

我试图写一个页面，用户可以发送电子邮件连同附件。我想我快成功了。现在我收到了电子邮件，但是附件的文件大小是空的，或者当我试图打开它时，我得到一个消息，它无法打开。如有任何帮助，不胜感激。

    function valid_email($Email)
{
    //new regex, didn't give me any errors...might be a bit more exact
  if (ereg('^[_a-zA-Z0-9-]+(.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(.[a-zA-Z0-9-]+)*.(([0-9]{1,3})|([a-zA-Z]{2,3})|(aero|coop|info|museum|name))$', $Email) != false)
    return true;
  else 
    return false;
}
function sendEmail($email){
    return  mail ($email['to'], $email['subject'], $email['message'], $email['headers']);
}

if ( strlen($_FILES['Resume_File']['name']) > 0 )
{   // If a file was uploaded, do some processing
    $filename = preg_replace('/[^a-zA-Z0-9._-]/', '', $_FILES['Resume_File']['name']);
    $filetype = $_FILES["Resume_File"]["type"];
    $filesize = $_FILES["Resume_File"]["size"];
    $filetemp = $_FILES["Resume_File"]["tmp_name"]; 
    $ext = substr($filename, strpos($filename,'.'), strlen($filename)-1);
    if ( !preg_match('/.(doc|docx|odt|pdf|rtf|txt)/i', $ext) )
    {   $errors++;
        $errorLog .= "Upload filetype not supported.";
    }
    else if ( $filesize > 2000000 )
    {   $errors++;
        $errorLog .= "File size too high, up to 2MB is allowed.";
    }
    else
    {   // Looks like the file is good, send it with the email
        //$fp = fopen($filetemp, "rb");
        //$file = fread($fp, $filesize);
        //$file = chunk_split(base64_encode($file));
        //$email['headers'] .= "n--{$num}n";
        //$email['headers'] .= "Content-Type:{$filetype}";
        //$email['headers'] .= "name={$filename}rn";
        //$email['headers'] .= "Content-Disposition: attachment; ";
        //$email['headers'] .= "filename={$filename}n";
        //$email['headers'] .= "{$file}";
    }
}
// get posted data into local variables
$fname = trim(stripslashes($_POST['fname']));
$lname = trim(stripslashes($_POST['lname']));
$emailAddress = trim(stripslashes($_POST['email']));
$company = trim(stripslashes($_POST['company'])); 
$information = trim(stripslashes($_POST['information']));
$subject = trim(stripslashes($_POST['subject']));
$title = trim(stripslashes($_POST['title']));
//setup email
$to = '[e-mail]';
$subject = "Resume Submission";
$headers = "From: {$fname} {$lname} <{$emailAddress}>rn";
// prepare email body text
$message = "First Name: {$fname} <br>";
$message .= "Last Name: {$lname} <br>";
$message .= "Email: {$emailAddress} <br>";
$message .= "Title: {$title} <br><br>";
$message .= "Comments: {$information}";
if ( $errors == 0 ) {
    // Attachment headers
    //$to = "[e-mail]";
    //$from = "Website <[e-mail]>";
    //$subject = "Test Attachment Email";
    $separator = md5(time());
    // carriage return type (we use a PHP end of line constant)
    $eol = PHP_EOL;
    // attachment name
    //$filename = "document.pdf";
    //$pdfdoc is PDF generated by FPDF
    $attachment = chunk_split(base64_encode($pdfdoc));
    // main header
    $headers .= "From: ".$from.$eol;
    $headers .= "MIME-Version: 1.0".$eol; 
    $headers .= "Content-Type: multipart/mixed; boundary="".$separator.""";
    // no more headers after this, we start the body! //
    $body = "--".$separator.$eol;
    $body .= "Content-Transfer-Encoding: 7bit".$eol.$eol;
    $body .= "This is a MIME encoded message.".$eol;
    // message
    $body .= "--".$separator.$eol;
    $body .= "Content-Type: text/html; charset="iso-8859-1"".$eol;
    $body .= "Content-Transfer-Encoding: 8bit".$eol.$eol;
    $body .= $message.$eol;
    // attachment
    $body .= "--".$separator.$eol;
    $body .= "Content-Type: application/octet-stream; name="".$filename.""".$eol; 
    $body .= "Content-Transfer-Encoding: base64".$eol;
    $body .= "Content-Disposition: attachment".$eol.$eol;
    $body .= $attachment.$eol;
    $body .= "--".$separator."--";
}

//sendEmail($email);
// validation
if ( $errors == 0 ) {
    if (valid_email($emailAddress) && $fname != "" && $lname != "") { //if return is true...
        mail($to, $subject, $body, $headers);
        echo 0; //Success
    }else { //otherwise
        echo 1; //Error
    }
} else {
    echo 1; //Error
}

我正在使用我在这里找到的部分代码

PHP mail()附件问题

谢谢!

Answer 1

PHP的mail()函数真的很差，特别是在尝试做高级的事情时，比如添加附件。它实际上只值得用于最基本的"向站点管理员发送通知电子邮件"类型的电子邮件，即使这样，它也不总是最好的解决方案。

我建议放弃使用mail()函数本身的任何尝试，而是切换到使用一个体面的PHP邮件器类，例如适当命名的phpMailer。

phpMailer使从PHP创建电子邮件变得非常容易。我有你想要的所有功能，包括让它很容易添加附件，写HTML电子邮件，以及更多。

但是phpMailer最好的地方是它消除了所有需要浪费几十行代码格式化电子邮件标题的需要。所有带有分隔符和mime类型的东西都简化为几行简单的代码。更容易阅读，更容易维护，并且不太可能有bug。你赢了。

Answer 2

//$pdfdoc is PDF generated by FPDF
    $attachment = chunk_split(base64_encode($pdfdoc));

$pdfdoc在页面的任何地方都没有提到。我想这就是问题所在:|