【发布时间】：2010-10-23 00:50:20
【问题描述】：
如果这个功能发送的电子邮件可以在大多数电子邮件和网络邮件客户端上正确识别，我有点担心，特别是我最担心这个疑问：
- UTF-8 声明和附件格式是否正确？
- 我需要使用quoted_printable_decode()吗？如果有，在哪里？
- 内容传输编码：7 位还是 8 位？我一直看到 7，但由于我发送的是 UTF-8 编码的邮件，所以我不确定。
- 我应该使用 mb_send_mail() 还是 mail() 就足够了？
编辑：我不知道为什么，但代码显示不正确，我提供了它@@http://gist.github.com/104818
编辑 2：我知道用于电子邮件处理的其他替代方案（库），但为了我自己的好奇心和知识，我只想知道这段代码是否 100% 好，或者它是否有问题.
function Email($name, $from, $to, $subject, $message, $bcc = null, $attachments = null)
{
ini_set('SMTP', 'localhost');
ini_set('sendmail_from', $from);
$name = filter_var($name, FILTER_SANITIZE_STRING);
$from = filter_var($from, FILTER_SANITIZE_EMAIL);
$subject = filter_var($subject, FILTER_SANITIZE_STRING);
$boundary = '_Boundary_' . md5(microtime(true) . mt_rand(0, PHP_INT_MAX));
$headers = array
(
'MIME-Version: 1.0',
'Content-Type: multipart/mixed; boundary="Mixed' . $boundary . '"',
'Date: ' . date('r', time()),
'From: "' . $name . '" <' . $from . '>',
'Reply-To: "' . $name . '" <' . $from . '>',
'Return-Path: "' . $name . '" <' . $from . '>',
'X-Mailer: PHP ' . phpversion(),
'X-Priority: 2',
'X-MSMail-Priority: High',
'X-Originating-IP: ' . $_SERVER['SERVER_ADDR'],
);
if (is_null($to) === false)
{
if (is_array($to) === false)
{
$to = explode(',', $to);
}
foreach ($to as $key => $value)
{
$to[$key] = filter_var($value, FILTER_SANITIZE_EMAIL);
}
$to = implode(', ', array_filter($to));
}
if (is_null($bcc) === false)
{
if (is_array($bcc) === false)
{
$bcc = explode(',', $bcc);
}
foreach ($bcc as $key => $value)
{
$bcc[$key] = filter_var($value, FILTER_SANITIZE_EMAIL);
}
$headers[] = 'BCC: ' . implode(', ', array_filter($bcc));
}
if (is_null($attachments) === false)
{
settype($attachments, 'array');
foreach ($attachments as $key => $value)
{
if (is_file($value) === true)
{
$attachments[$key] = array
(
'',
'--Mixed' . $boundary,
'Content-Type: application/octet-stream; name="' . basename($value) . '"',
'Content-Disposition: attachment; filename="' . basename($value) . '"',
'Content-Transfer-Encoding: base64',
'',
trim(chunk_split(base64_encode(file_get_contents($value)))),
);
$attachments[$key] = implode("\n", $attachments[$key]);
}
else
{
unset($attachments[$key]);
}
}
$attachments = implode("\n", $attachments) . "\n";
}
$message = array
(
'This is a multi-part message in MIME format.',
'',
'--Mixed' . $boundary,
'Content-Type: multipart/alternative; boundary="Alt' . $boundary . '"',
'',
'--Alt' . $boundary,
'Content-Type: text/plain; charset="UTF-8"',
'Content-Disposition: inline',
'Content-Transfer-Encoding: 8bit',
'',
trim(strip_tags($message, '<a>')),
'',
'--Alt' . $boundary,
'Content-Type: text/html; charset="UTF-8"',
'Content-Disposition: inline',
'Content-Transfer-Encoding: 8bit',
'',
trim($message),
'',
'--Alt' . $boundary . '--',
$attachments,
'--Mixed' . $boundary . '--',
);
if (@mail($to, stripslashes($subject), implode("\n", $message), implode("\n", $headers)) === true)
{
return true;
}
return false;
}
【问题讨论】：