$dat='<xml>    <appid>wx35ec6d7f8a84088d</appid>    <mch_id>1541299971</mch_id>    <nonce_str>'.random(32).'</nonce_str>    <out_order_no>ME20191105131500813628</out_order_no>    <transaction_id>4200000427201911052688896404</transaction_id>    <sign>'.strtoupper(md5(trim($string1))).'</sign>    <sign_type>HMAC-SHA256</sign_type>    <receivers> [ {        "type"=>"PERSONAL_WECHATID",      "account"=>"zmyzmy812",      "amount"=>5,      "description"=>"测试分到个人" } ] </receivers> </xml>';      $url="https://api.mch.weixin.qq.com/secapi/pay/profitsharing";      $response = ihttp_post($url, $dat); //    $response = $this->test($url,$dat);      return $response;

微信分账,一直报这个错，不知道什么原因    $dat='<xml>    <appid>wx35ec6d7f8a84088d</appid>    <mch_id>1541299971</mch_id>    <nonce_str>'.random(32).'</nonce_str>    <out_order_no>ME20191105131500813628</out_order_no>    <transaction_id>4200000427201911052688896404</transaction_id>    <sign>'.strtoupper(md5(trim($string1))).'</sign>    <sign_type>HMAC-SHA256</sign_type>    <receivers> [ {        "type"=>"PERSONAL_WECHATID",      "account"=>"zmyzmy812",      "amount"=>5,      "description"=>"测试分到个人" } ] </receivers> </xml>';      $url="https://api.mch.weixin.qq.com/secapi/pay/profitsharing";      $response = ihttp_request($url, $dat); //    $response = $this->test($url,$dat);      return $response;