Homeassistant/PHP: Read sensor via REST API

ha.php

<?PHP
function getHA($id) { //ID to read - for example sensor.foo
    $key = ''; //Long-lived access token, can be obtained in HomeAssistant UI→Profile
    $url = 'http://127.0.0.1:8123/'; //URL to your HA including trailing /

    $opts = [
        "http" => [
            "method" => "GET",
            "header" =>
                "Content-Type: application/json\r\n" .
                "Authorization: Bearer ".$key."\r\n"
        ]
    ];
    $ctx = stream_context_create($opts);
    $data = @file_get_contents($url.'api/states/'.$id, false, $ctx);
    if(!$data) return false;
    $data = json_decode($data);
    if(!$data) return false;
    if(!isset($data->state)) return false;
    return [$data->state, $data->last_updated];
}

/*
Usage:

$data = getHA('sensor.foo');
if($data) {
  echo 'Value: '.$data[0].PHP_EOL;
  echo 'Last Update: '.$data[2].PHP_EOL;
}else{
  echo 'Sensor not found'.PHP_EOL;
}
*/
?>