坐等大侠，Mail_mimeDecode如何使用，希望用过这个类的朋友指点下

$mailhandle = new Mail_mimeDecode($intput);

Array
(
    [0] => Delivered-To: [email protected]
    [1] => Received: by 10.194.118.165 with SMTP id kn5csp54354wjb;        Sun, 18 Aug 2013 16:02:50 -0700 (PDT)
    [2] => Return-Path: <[email protected]ptions.bounces.google.com>
    [3] => Received-SPF: pass (google.com: domain of [email protected]ptions.bounces.google.com designates 10.42.90.198 as permitted sender) client-ip=10.42.90.198
    [4] => Authentication-Results: mr.google.com;       spf=pass (google.com: domain of [email protected]ptions.bounces.google.com designates 10.42.90.198 as permitted sender) [email protected]be-subscriptions.bounces.google.com;       dkim=pass [email protected]
    [5] => X-Received: from mr.google.com ([10.42.90.198])        by 10.42.90.198 with SMTP id l6mr6351416icm.12.1376866970755 (num_hops = 1);        Sun, 18 Aug 2013 16:02:50 -0700 (PDT)
    [6] => DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;        d=youtube.com; s=20120806;        h=mime-version:list-unsubscribe:message-id:date:subject:from:to         :content-type;        bh=n7PitUTrJ87AT0nZCJSaJq42DcI0/OdbAhSrNcKQ8ME=;        b=L514lliLxaWgldKczFgLfD9p1xL0rKpLzr5Br9IuL4PWNkT2YPcU6FVTBK/6hPA3Cb         sVmh0Wnwesx+s15ift8nNL8sPfVv77JOdgen74G315tBB5g07C97IjiZpGdz3t1Y56zR         qzo4h0WkRL4fdNk/HXUnTBuetnJGFiVC98094qxIhg48rrzbeEmoy696xX0OsNDrx4CC         6+sLhsgQvTzjZ4HzX09F56LgToWvU05hWuQ5IEW2OeLfBKEtTcsikWstGUzq36LZ/pVW         /RYibbavItiH7uii6/H6iHyN3Fi73WqvtdRf/wU0ZuQl8J0o/NbOVyHCcC5UuNS/kTOs         w56w==
    [7] => MIME-Version: 1.0
    [8] => X-Received: by 10.42.90.198 with SMTP id l6mr4798207icm.12.1376866969820; Sun, 18 Aug 2013 16:02:49 -0700 (PDT)
    [9] => List-Unsubscribe: 
    [10] => Message-ID: <[email protected]>
    [11] => Date: Sun, 18 Aug 2013 23:02:49 +0000
    [12] => Subject: =?GB2312?Q?Adrian_Crenshaw=A3=BAcharacter_assassination_animation_?=	=?GB2312?Q?test=0D=0A?=
    [13] => From: YouTube <[email protected]>
    [14] => To: Zi Bei <[email protected]>
    [15] => Content-Type: multipart/alternative; boundary=90e6ba614c92a39e3004e440d28a
)
 Array
(
    [0] => --001a11c255345c277404e49f0c1b
    [1] => Content-Type: text/plain; charset=GB2312; format=flowed; delsp=yes
    [2] => Content-Transfer-Encoding: base64
    [3] => 
    [4] => sb7W3CBHb29nbGUrIMjIw8XQxc+iDQoNCrLpv7TIyMPF0MXPoiAgDQpodHRwczovL3BsdXMuZ29v
    [5] => Z2xlLmNvbS9fL25vdGlmaWNhdGlvbnMvZW1saW5rP2Vtcj0xMTUyMjc3MzI2MDc0OTQ1Mjc3NiZl
    [6] => bWlkPUNKQ2s0T0x3azdrQ0ZjbEFNUW9kNVcwQUFBJnBhdGg9JTJGZXhwbG9yZSZkdD0xMzc3Mjcx
    [7] => NjY1MTA5JnViPTM3DQoNCi0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLQ0KDQq4/LjER29vZ2xlK7vh
    [8] => z/LE47eiy83ExNCptefX09PKIA0KvP6jumh0dHBzOi8vcGx1cy5nb29nbGUuY29tL18vbm90aWZp
    [9] => Y2F0aW9ucy9lbWxpbms/ZW1yPTExNTIyNzczMjYwNzQ5NDUyNzc2JmVtaWQ9Q0pDazRPTHdrN2tD
)

$ar = array(
    'sb7W3CBHb29nbGUrIMjIw8XQxc+iDQoNCrLpv7TIyMPF0MXPoiAgDQpodHRwczovL3BsdXMuZ29v',
    'Z2xlLmNvbS9fL25vdGlmaWNhdGlvbnMvZW1saW5rP2Vtcj0xMTUyMjc3MzI2MDc0OTQ1Mjc3NiZl',
    'bWlkPUNKQ2s0T0x3azdrQ0ZjbEFNUW9kNVcwQUFBJnBhdGg9JTJGZXhwbG9yZSZkdD0xMzc3Mjcx',
    'NjY1MTA5JnViPTM3DQoNCi0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLQ0KDQq4/LjER29vZ2xlK7vh',