counting the results in codeigniter - php

Question

I want to count all the results in my table that has the same eventId in studentattendees table for every activity that I create. Here is a snippet of my two tables in my db. activity and studentattendees table.
studentattendees table:
activity table:
I want to know how I can make a model function that counts all the results where eventId in my studentattendees is equal to activityId in activity table. Also, how I would echo this in view. Here is a sample of my code in model, view, controller.
//view
public function getReportAttendees(){
$this->db->order_by('activity.activityId', 'DESC');
$query = $this->db->get('activity');
// date status
$resulting = $query->result_array();
foreach($resulting as $resultings){
$activity = $resultings['activityId'];
$this->db->join('activity', 'activity.activityId =
studentattendees.eventId');
$this->db->where('eventId',$activity);
$this->db->from('studentattendees');
$count = $this->db->count_all_results();
foreach($count as $counts){
array_push($countall, $count);
}
}
return $countall;
}
//view
<?php
if($attendee){
foreach($attendee as $attendees){
?>
<td><?php echo $attendees; ?></td>
<?php
}
}
?>
//controller
public function ReportGenerated(){
$data['attendee'] = $this->u->getReportAttendees();
$this->load->view('logmanagement/reportgenerated', $data);
}

Answer 1

//modal
public function getReportAttendees(){
$countall = array();
$this->db->order_by('activity.activityId', 'DESC');
$query = $this->db->get('activity');
$resulting = $query->result_array();
foreach($resulting as $resultings){
$activity = $resultings['activityId'];
$this->db->join('activity', 'activity.activityId = studentattendees.eventId');
$this->db->where('eventId',$activity);
$this->db->from('studentattendees');
$count = $this->db->count_all_results();
foreach($count as $counts){
array_push($countall, $count);
}
}
return $countall;
}
//view
<?php
if($attendee){
foreach($attendee as $attendees){
?>
<td><?php echo $attendees; ?></td>
<?php
}
}
?>
//controller
public function ReportGenerated(){
$data['attendee'] = $this->u->getReportAttendees();
$this->load->view('logmanagement/reportgenerated', $data);
}