PHP curl 模拟登陆 获取cookie

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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(^1[3
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4
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5
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8]\d{9}$)
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(^\d{3,}$)
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(^\++\d{2,}$)" autocomplete="off"/>
          
            
              帐户名错误
            
            
              请输入帐户名
            
            
          
        

        

          
          
          
            
              请输入密码