如何解决curl php post 丢失问题

$ch = curl_init ();
curl_setopt ( $ch, CURLOPT_URL, $uri );
curl_setopt ( $ch, CURLOPT_POST, 1 );
curl_setopt ( $ch, CURLOPT_HEADER, 0 );
curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, 1 );
curl_setopt ( $ch, CURLOPT_POSTFIELDS, $data );
$return = curl_exec ( $ch );
curl_close ( $ch );

$title =  '我是标题';
$content = &#39;<a href="http://www.baidu.com?a=1&b=1">点我百度一下</a>&#39;;

$data = &#39;title=这是标题&content=<a href="http://www.baidu.com?a=1&b=1">点我百度一下</a>&#39;;