php推送给特定频道的设备问题

想用php给特定的频道设备推送消息，总是出错。直接上代码：

public function api(){
      $channel=I('channel');
      //初始化，创建一个curl资源
      $info=curl_init();
      
      //设置url和相应的选项
      curl_setopt($info, CURLOPT_HTTPHEADER, array(
        "X-LC-Id:",
        "X-LC-Key:",
        "Content-Type: application/json"
      ));
      curl_setopt($info, CURLOPT_URL, "https://api.leancloud.cn/1.1/push?".urlencode("'where':{'channel':{'$resex':'{$channel}','data':{'alert':'{'action':'com.auais.CMD','cmd':'cmd_update_card'}'}}"));
      curl_setopt($info, CURLOPT_HEADER,FLASE);
      curl_setopt($info, CURLOPT_SSL_VERIFYPEER, FALSE);
      curl_setopt($info, CURLOPT_SSL_VERIFYHOST, FALSE);
      curl_setopt($info, CURLOPT_RETURNTRANSFER, TRUE);

      //抓取url并传递给浏览器
  $want=curl_exec($info);
  $one=json_decode($want);
  //$error=curl_error($info);
  //关闭curl资源，并且释放系统资源
  curl_close($info);
  dump($one);
  //return $error;
  // return $one;
}