调用高级群发接口：

1. 调用根据分组进行群发，返回错误代码：errcode:40008,errmsg:invalid message type

错误原因：HTTP请求提交的数据未进过JSON编码，注意下面代码中注释标明“正确和错误方式”的部分。

调用代码如下：

access_token = $access_token;     }     public function sentMsgToGroup()     {         // 根据分组进行群发【订阅号与服务号认证后均可用】         // http请求方式: POST         $url  = "https://api.weixin.qq.com/cgi-bin/message/mass/sendall?access_token=$this->access_token";         $data = array(             'filter' => array(                 'is_to_all' => false,                 'group_id' => 0             ),             'msgtype' => 'text',             'text' => array(                 'content' => 'this is test message with 中文！'             )         );         // JSON参数错误体检方式         // $res = json_decode($this -> httpPost($url, $data));         // JSON参数正确提交方式         $res = json_decode($this -> httpPost($url, json_encode($data, JSON_UNESCAPED_UNICODE)));         return $res;     }     private function httpPost($url, $data) {         $curl = curl_init();         curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);         curl_setopt($curl, CURLOPT_TIMEOUT, 500);         curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);         curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);         curl_setopt($curl, CURLOPT_POST, 1);         curl_setopt($curl, CURLOPT_POSTFIELDS, $data);         curl_setopt($curl, CURLOPT_URL, $url);         $res = curl_exec($curl);         curl_close($curl);         return $res;   } } ?>

2. 调用根据OpenID列表群发，返回错误代码：errcode:40003,errmsg:invalid openid

错误原因：HTTP请求提交的数据未进过JSON编码，注意下面代码中注释标明“正确和错误方式”的部分。

调用代码如下：

access_token = $access_token;     }     public function sentMsgToOpenId()     {         // 根据分组进行群发【订阅号与服务号认证后均可用】         // http请求方式: POST         $url  = "https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=$this->access_token";         $data = array(             'touser' => 'oCECzv7gYSf4SCUrqYNPGL5JJI4M',             'msgtype' => 'text',             'text' => array(                 'content' => 'this is test message with 中文！'             )         );         // JSON参数错误体检方式         // $res = json_decode($this -> httpPost($url, $data));         // JSON参数正确提交方式         $res = json_decode($this -> httpPost($url, json_encode($data, JSON_UNESCAPED_UNICODE)));         return $res;     }     private function httpPost($url, $data) {         $curl = curl_init();         curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);         curl_setopt($curl, CURLOPT_TIMEOUT, 500);         curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);         curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);         curl_setopt($curl, CURLOPT_POST, 1);         curl_setopt($curl, CURLOPT_POSTFIELDS, $data);         curl_setopt($curl, CURLOPT_URL, $url);         $res = curl_exec($curl);         curl_close($curl);         return $res;   } } ?>