Function not returning all database rows - php

Question

I have this function in Code igniter PHP where I am trying to get all rows from the database that match a input value.
How should I change the code to get all rows that match my search criteria?
Thank you
Model search function:
function findquestion($searchvalue){
$this->db->where('answer1', $searchvalue);
$res = $this->db->get('questions');
$count = $res->num_rows();
if($res->num_rows()==0){
return "...";
}
$moviearray = $res->row_array();
return $moviearray;
}
Controller Function:
public function getdatabasedata()
{
if($this->input->server('REQUEST_METHOD') == 'GET')
{
$year = $this->input->get('searchvalue');
if($year != ''){
$movie = $this->adminmodel->findquestion($year);
echo json_encode($movie);
}
}
}
When I look at Postman to check what the JSON object holds, this is what I get. But in fact I have three more rows in my database that match my search criteria.
{
"id": "10",
"question": "test questions",
"image": "test image",
"answer1": "answer1",
"answer2": "answer2",
"answer3": "answer3",
"answer4": "answer4"
}

Answer 1

function findquestion($searchvalue){
1) define array.
$data = array();
$this->db->where('answer1', $searchvalue);
$res = $this->db->get('questions');
if($res->num_rows()==0){
return "...";
}
2) loop trough results and store in array.
foreach ($res->result() as $row)
{
$data[] = array(
'id' => $row->id,
'question' => $row->question,
'image' => $row->image,
'answer1' => $row->answer1,
'answer2' => $row->answer2,
'answer3' => $row->answer3,
'answer4' => $row->answer4
);
}
//$moviearray = $res->row_array();
return $data;
}