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opt($ch,CURLOPT_URL,$get_token_url);

  curl_setopt($ch,CURLOPT_HEADER,0);

  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 );

  curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);

  $res = curl_exec($ch);

  curl_close($ch);

  $json_obj = json_decode($res,true);

  //根据openid和access_token查询用户信息

  $accesstoken = $json_obj['access_token'];

  $post_url = 'https://api.weixin.qq.com/wxa/msg_sec_check?access_token='.$accesstoken;

  $ch = curl_init();

  curl_setopt($ch,CURLOPT_URL,$post_url);

  curl_setopt($ch,CURLOPT_HEADER,0);

  curl_setopt($ch, CURLOPT_POST, 1);

  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 );

  curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);

  $post_data = array(

    "content" => $content

  );

  $data_string = json_encode($post_data,JSON_UNESCAPED_UNICODE); 

  curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);

  curl_setopt($ch, CURLOPT_HTTPHEADER, array(

      'Content-Type: application/json'

  ));

  $res = curl_exec($ch);

  curl_close($ch);

  $json_obj = json_decode($res,true);

  return $json_obj;