PHP的imap_fetch_overview()中是否有错误 - 在使用括号读取标题时是否有效？

Question

我正在使用以下代码在PHP中发送电子邮件:

<?php
error_reporting(E_ALL);

# write mail
###############################################################################
$recipient  = "mail@server.tld";
$subject    = mb_encode_mimeheader("Subject äöü ");
$text       = "Hallo";
$header     = "From:".mb_encode_mimeheader("Name with [], ÄÖÜ and spaces")." <webmaster@example.com>"
                . "\r\n" . "Reply-To: webmaster@example.com"
                . "\r\n" . "X-Mailer: PHP/" . phpversion();

// send e-mail
mail($recipient, $subject, $text, $header);
?>

之后我尝试使用imap_fetch_overview()以下代码阅读电子邮件:

<?php
# receive mails
###############################################################################
$mailbox        = imap_open("{imap.server.tld/norsh}", "mail@server.tld", "********");

$MC = imap_check($mailbox);
$result = imap_fetch_overview($mailbox,"1:{$MC->Nmsgs}",0);

echo "<table>";
foreach ($result as $overview) {
    echo "<tr>"
        ."<td>".$overview->msgno."</td>"
        ."<td>".$overview->uid."</td>"
        ."<td>".$overview->date."</td>"
        ."<td>".$overview->udate."</td>"
        ."<td>".$overview->from."</td>"
        ."<td>".$overview->to."</td>"
        ."<td>".$overview->size."</td>"
        ."<td>".$overview->subject."</td>"
        ."</tr>";
}
echo "</table>";
?>

我收到以下错误:

Notice: Undefined property: stdClass::$from in /mail_test.php on line 34

而$overview->from没有价值.

当"From:" - part不包含括号时,没有问题.我是否还必须对括号进行编码？怎么样？我以为mb_encode_mimeheader()是在做这个工作.

编辑:

结果var_dump($overview)是:

object(stdClass)#18 (14) {
  ["subject"]=>
  string(40) "Subject =?UTF-8?B?w4PCpMODwrzDg8K2IA==?="
  ["to"]=>
  string(16) "mail@server.tld"
  ["date"]=>
  string(31) "Thu, 16 Aug 2012 16:58:23 +0200"
  ["message_id"]=>
  string(58) "<**************************************>"
  ["size"]=>
  int(1585)
  ["uid"]=>
  int(18)
  ["msgno"]=>
  int(17)
  ["recent"]=>
  int(1)
  ["flagged"]=>
  int(0)
  ["answered"]=>
  int(0)
  ["deleted"]=>
  int(0)
  ["seen"]=>
  int(0)
  ["draft"]=>
  int(0)
  ["udate"]=>
  int(1345129104)
}

Answer 1

问题是，

\n\n

echo mb_encode_mimeheader("Name with [], \xc3\x84\xc3\x96\xc3\x9c and spaces");\n

\n\n

回报

\n\n

Name with [], =?UTF-8?B?w4PChMODwpbDg8KcIGFuZCBzcGFjZXM=?=\n

\n\n

这不是你想要的。

\n\n

我在 php.net 上找到了这个函数，它可能对你有帮助：

\n\n

function EncodeMime($Text, $Delimiter) { \n    $Text = utf8_decode($Text); \n    $Len  = strlen($Text); \n    $Out  = ""; \n    for ($i=0; $i<$Len; $i++) \n    { \n        $Chr = substr($Text, $i, 1); \n        $Asc = ord($Chr); \n\n        if ($Asc > 0x255) // Unicode not allowed \n        { \n            $Out .= "?"; \n        } \n        else if ($Chr == " " || $Chr == $Delimiter || $Asc > 127) \n        { \n            $Out .= $Delimiter . strtoupper(bin2hex($Chr)); \n        } \n        else $Out .= $Chr; \n    } \n    return $Out; \n} \necho EncodeMime("Name with [], \xc3\x84\xc3\x96\xc3\x9c and spaces", \'%\');\n

\n\n

它返回

\n\n

Name%20with%20[],%20%C4%D6%DC%20and%20spaces\n

\n