[英]Method parameter must be obj of certain class that implements certain interface
[英]Message: count(): Parameter must be an array or an object that implements Countable codeigniter on centos
查看我的查询
Select * from join_chat where
(user_1 = '24' and user_2 = '26') or
(user_1 = '26' and user_2 = '24')
请从我的 api 提供解决此错误的建议
<h4>A PHP Error was encountered</h4>
<p>Severity: Warning</p>
</div>{"responce":true,"data":"20"}
2020-05-09 23:16:43.302 28439-30249/techline.carsapp W/System.err: org.json.JSONException: Value Select of type java.lang.String cannot be converted to JSONObject 2020-05-09 23: 16:43.302 28439-30249/techline.carsapp W/System.err: at org.json.JSON.typeMismatch(JSON.java:112) 2020-05-09 23:16:43.302 28439-30249/techline.carsapp W/ System.err: at org.json.JSONObject.(JSONObject.java:163) 2020-05-09 23:16:43.302 28439-30249/techline.carsapp W/System.err: at org.json.JSONObject.(JSONObject 。 43.303 28439-30249/技术热线。 carsapp W/System.err: at util.CommonAsyTask.doInBackground(CommonAsyTask.java:23) 2020-05-09 23:16:43.303 28439-30249/techline.carsapp W/System.err: at android.os.AsyncTask$2 .call(AsyncTask.java:333) 2020-05-09 23:16:43.303 28439-30249/techline.carsapp W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:266) 2020 -05-09 23:16:43.303 28439-30249/techline.carsApp w/system.err:zc31b32364ce19ca8fcd150a417ecce58z.os.os.asenctask 28439-30249/techline.carsapp W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) 2020-05-09 23:16:43.303 28439-30249/techline.carsapp W/System .err:在 java.util.concurrent.Thread PoolExecutor$Worker.run(ThreadPoolExecutor.java:641) 2020-05-09 23:16:43.303 28439-30249/techline.carsapp W/System.err: at java.lang.Thread.run(Thread.java:764)
消息:count():参数必须是一个数组或实现 Countable 的 object
文件名:控制器/Api.php
行号:801
<p>Backtrace:</p>
下面controller中的方法
public function send_chat_data()
{
$this->load->library('form_validation');
$this->form_validation->set_rules('join_id', 'join_id', 'trim|required');
$this->form_validation->set_rules('sender_id', 'sender_id', 'trim|required');
$this->form_validation->set_rules('message', 'message', 'trim|required');
if ($this->form_validation->run() == false) {
$data["responce"] = false;
$data["error"] = 'join id is required';
} else {
$post_date=date("Y-m-d m:i:s");
$send_chat = array(
"join_id"=>$this->input->post("join_id"),
"sender_id"=>$this->input->post("sender_id"),
"message"=>$this->input->post("message"),
"created_date"=>$post_date
);
$this->db->insert("chat", $send_chat);
$insertid = $this->db->insert_id();
$q = $this->db->query("Select * from join_chat where join_id= '".$this->input->post("join_id")."' limit 1");
$recever_id = 0;
$row = $q->row();
if ($row->user_1 == $this->input->post("sender_id")) {
$recever_id = $row->user_2;
} else {
$recever_id = $row->user_1;
}
$q2 = $this->db->query("Select * from chat where chat_id= '".$insertid."' limit 1");
$chat = $q2->row();
$data["responce"] = true;
$data["data"] = $chat;
$q_fcm = $this->db->query("Select * from users where user_id= '".$recever_id."' limit 1");
$row_fcm = $q_fcm->row();
$registatoin_ids =$row_fcm->user_gcm_code;
$message["title"] = $this->config->item('app_name');
$message["message"] = $this->input->post("message");
$message["image"] = "";
$message["created_at"] = date("Y-m-d h:i:s");
$message["obj"] = $chat;
$this->load->helper('gcm_helper');
$gcm = new GCM();
//$result = $gcm->send_topics("/topics/rabbitapp",$message ,"ios");
$result = $gcm->send_notification(array($registatoin_ids), $message, "android");
}
echo json_encode($data);
}
错误来自下面的行
$row = $q->row();
正如我所见,您的问题中的问题是您正在尝试计算非数组或不可数的 object。
想法
count()
,为什么?$q->row();
当您自己将结果限制为 1 时// as you said the problem is here $row = $q->row();
可能的解决方案
当你使用row()
即$q->row();
你得到一个不可数的 object ,
// row() dummy data
stdClass Object
(
[id] => 15
[event_id] => 3
[event_image] => c1fa8a5d5505047251fd928aa312b16c.jpg
)
但是当你使用result()
即$q->result();
,它将产生一个对象数组,或者在result_array()
的情况下,一个 arrays 数组,即使您将它们限制为一个。
// result() dummy data -- same as result_object()
(
[0] => stdClass Object
(
[id] => 15
[event_id] => 3
[event_image] => c1fa8a5d5505047251fd928aa312b16c.jpg
)
)
// result_array() dummy data
Array
(
[0] => Array
(
[id] => 15
[event_id] => 3
[event_image] => c1fa8a5d5505047251fd928aa312b16c.jpg
)
)
它们现在都是一个数组,因此是可数的。
因此,如果必须计算,请使用
$q->result();
另外,如果你想计算“结果”的数量$q->row();
有,你可以用count((array) ($q->row()));
这将在这里返回 3。{id}, {event_id}, {event_image}
。 在此处阅读有关它的更多信息
希望它可以帮助你。
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