PHPカールはログインをシミュレートし、Cookieを取得します

PHP curl 模拟登陆 获取cookie求助
菜鸟学习使用PHP curl模拟登陆，等陆weiphon论坛时用以下代码成功，登陆www.xiaomi.com就死活成功不了，求助啊。窃以为是cookie获取有问题。麻烦牛人帮忙解决一下。苦思无所得夜不能寐啊！

<br />
<?php<br />
	$cookie_file=tempnam('./temp','cookie');<br />
	$login_url='https://account.xiaomi.com/pass/serviceLoginAuth';<br />
	$post ='user&pwd=&sid=eshop&callback=http%3A%2F%2Forder.xiaomi.com%2Flogin%2Fcallback%3Ffollowup%3Dhttp%253A%252F%252Fwww.xiaomi.com%252F%26sign%3DMjk4NmVlYzNiOWY5YTkwMjExNzg5MjkyNzE3ZmIxOGM4YTBiMDk1Mg%2C%2C&_sign=f%2FKB8SAfmaLZ0s28kcLtBSmZlEM%3D&_json=true'//避免不必要的麻烦 post的具体帐号密码去掉了<br />
<br />
	$ch=$curl=curl_init($login_url);<br />
	curl_setopt($ch,CURLOPT_HEADER,0);<br />
	curl_setopt($ch,CURLOPT_RETURNTRANSFER,0);<br />
	curl_setopt($ch,CURLOPT_POST,1);<br />
	curl_setopt($ch,CURLOPT_COOKIEJAR,$cookie_file);<br />
	curl_setopt($ch,CURLOPT_POSTFIELDS,$post);<br />
	curl_exec($ch);<br />
	curl_close($ch);<br />
<br />
	$url="http://www.xiaomi.com/index.php";<br />
	$ch=curl_init($url);<br />
	curl_setopt($ch,CURLOPT_HEADER,0);<br />
	curl_setopt($ch,CURLOPT_RETURNTRANSFER,0);<br />
	curl_setopt($ch,CURLOPT_COOKIEFILE,$cookie_file);<br />
	$contents=curl_exec($ch);<br />
	curl_close($ch);<br />
	<br />
	<br />
?>

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------解决方案--------------------

<form method="post" action="/pass/serviceLoginAuth2" id="loginForm" onsubmit="return validate_form()"><br>
	<input type="hidden" name="passToken" id="passToken" value="" /><br>
        <div class="input-field clearfix" id="loginId"><br>
          <input type="text" id="user_ph" class="input_kuang item errortip" value="邮箱/手机号码/小米ID" style="color:#999;display:none;"/><br>
          <input type="text" name="user" value="" id="user" class="input_kuang item errortip" placeholder="邮箱/手机号码/小米ID" isRequired="true" rule="(^[\w.\-]+@(?:[a-z0-9]+(?:-[a-z0-9]+)*\.)+[a-z]{2,6}$)<br><font color='#FF8000'>------解决方案--------------------</font><br>(^1[3<br><font color='#FF8000'>------解决方案--------------------</font><br>4<br><font color='#FF8000'>------解决方案--------------------</font><br>5<br><font color='#FF8000'>------解决方案--------------------</font><br>8]\d{9}$)<br><font color='#FF8000'>------解决方案--------------------</font><br>(^\d{3,}$)<br><font color='#FF8000'>------解决方案--------------------</font><br>(^\++\d{2,}$)" autocomplete="off"/><br>
          <span class="littlepop"><!-- 错误提示小气泡 --><br>
            <span class="popmessage error_tip"><br>
              <span class="error_icontwo"></span><span id="errorTip">帐户名错误</span><br>
            </span><br>
            <span class="popmessage empty_tip"><br>
              <span class="error_icontwo"></span><span>请输入帐户名</span><br>
            </span><br>
            <i class="little_corner"></i><br>
          </span><br>
        </div><br>
        <div class="input-field clearfix" id="loginPass"><br>
          <br>
          <input type="password" name="pwd" class="input_kuang item errortip" id="pwd" placeholder="秘密" isRequired="true" autocomplete="off"/><!--error_putfor出错误時の黄框 --><br>
          <span class="littlepop"><br>
            <span class="popmessage empty_tip"><br>
              <span class="error_icontwo"></span><span>请输入密码</span><br>
            </span> <br>
            <i class="little_corner"></i><br>
          </span><br>
          <input type="hidden" name="callback" value="https://account.xiaomi.com"> <div class="clear"></div>