Returning data from controller - Codeigniter - php

Question

I am trying to return data to my variable $item_id but the variable returns empty. Am i not returning the data the right way ??
item_id should return "Alert" which is coming from the index function in serverMonitor.php.
Please advice. Thank you
Items.php
function rest_state()
{
$id = 1;
$item_id = $this->pass_to_res($id);
return $item_id //this should return "Alert"
}
function pass_to_res($id)
{
$url = "https://example.com/serverMonitor?id=$id";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET");
$result = curl_exec($ch);
curl_close ($ch);
return $result;
}
serverMonitor.php
function index() {
$id = htmlentities($_GET['id']);
$word = "Alert";
return $word;
}

Answer 1

Return values from a function are not always visible to the visitor. You should use echo, print or print_r.
function index() {
$id = htmlentities($_GET['id']);
$word = "Alert";
echo $word;
return true;
}
You can also use JSON with json_encode to encoding
function index() {
$id = htmlentities($_GET['id']);
$word = "Alert";
echo json_encode(['word' => $word]);
return true;
}
And json_decode to decoding:
function pass_to_res($id)
{
$url = "https://example.com/serverMonitor?id=$id";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET");
$result = curl_exec($ch);
curl_close ($ch);
$result = json_decode($result);
return isset($result['word']) ? $result['word'] : false;
}