Update query for API in codeigniter is not working - php

Question

i want to write a API for updating data in sql. I am using CI for it.I am new to this field.while i have written it is not working in localhost itself .Can anyone help me? I am attaching my controller and model here.it is showing an error like this page is not working
function editprofile($id,$data) {
$this->db->where(array('user_id' => $id));
$this->db->update('registrationdetails', $data);
if(!empty($id))
{
$result = true;
} else {
$result = false;
}
return $result;
}
public function updateuser()
{
$adminId = 1;
$AUTHENTIC_KEY = "4u0IOxa1YTwNo38QjArD9ysW6PgVnbX7vtlJ";
$user_id=2;
$firstname ="aiswarya";
$lastname ="mathew";
$email ="aiswarya#gmail.com";
$password ="aiswarya";
$confirmpassword ="aiswarya";
$contactnumber ="999999999";
$gender ="female";
$address ="canada";
$department ="cse";
$designation ="swe";
$Admindetails = $this->common->CheckValidAdmin($adminId,$AUTHENTIC_KEY);
if($Admindetails != false)
{
$validAdmin = array('authentication_key' => $Admindetails->authentication_key,
'admin_id' => $Admindetails->id
);
$data = array();
$data = array('firstname'=>$firstname,'lastname'=>$lastname,'email'=>$email,'password'=>$password,'confirmpassword'=>$confirmpassword,'contactnumber'=>$contactnumber,'gender'=>$gender,'address'=>$address,'department'=>$department,'designation'=>$designation);
$status = $this->user->editprofile($user_id,$data);
if($status == true)
{
$response = array('status' => 200,
'message' => 'updated successfully',
'admin_details' => $validAdmin
);
} else {
$response = array('status' => 404,
'message' => 'unable to add, please try again',
'admin_details' => $validAdmin);
}
} else {
$response = array('status' => 404,
'message' => 'Authentication Failed');
}
echo json_encode($response);
}

Answer 1

function editprofile($data) {
if(!empty($data['user_id']))
{
$this->db->where(array('user_id' => $data['user_id']));
$this->db->update('registrationdetails', $data);
$result = true;
} else {
$result = false;
}
return $result;
}
public function updateuser()
{
$data['adminId'] = 1;
$data['AUTHENTIC_KEY'] = "4u0IOxa1YTwNo38QjArD9ysW6PgVnbX7vtlJ";
$data['user_id']=2;
$data['firstname'] ="aiswarya";
$data['lastname'] ="mathew";
$data['email'] ="aiswarya#gmail.com";
$data['password'] ="aiswarya";
$data['confirmpassword'] ="aiswarya";
$data['contactnumber'] ="999999999";
$data['gender'] ="female";
$data['address'] ="canada";
$data['department'] ="cse";
$data['designation'] ="swe";
$Admindetails = $this->common->CheckValidAdmin($data['adminId'],$data['AUTHENTIC_KEY']);
if($Admindetails != false)
{
$validAdmin = array('authentication_key' => $Admindetails->authentication_key,
'admin_id' => $Admindetails->id);
$status = $this->user->editprofile($data);
if($status == true)
{
$response = array('status' => 200,
'message' => 'updated successfully',
'admin_details' => $validAdmin
);
} else {
$response = array('status' => 404,
'message' => 'unable to add, please try again',
'admin_details' => $validAdmin);
}
} else {
$response = array('status' => 404,
'message' => 'Authentication Failed');
}
echo json_encode($response);
}