让使用UTF-8编码中文标题不再乱码

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// ###################### Start vbmail #######################

$message = unhtmlspecialchars($message, $unicode_decode);
$subject = unhtmlspecialchars($subject, $unicode_decode);

$subject = "=?UTF-8?B?".base64_encode($subject)."?=";

$mailfromname = unhtmlspecialchars($mailfromname, $unicode_decode);

$mailfromname = "=?UTF-8?B?".base64_encode($mailfromname)."?=";