PHP中的语法或变量错误

Question

Is there any problem with this PHP code? It displays nothing. Please help.

<?php
date_default_timezone_set('Asia/Kuala_Lumpur');
$date_time = date('Y-m-d H:i:s');
$host = $_SERVER['HTTP_HOST'];
$device = Detect::deviceType();
$device_brand = Detect::brand();
$operating_system = Detect::os();
$browser_name = Detect::browser();
$service_host = Detect::ipHostname();
$service_org = Detect::ipOrg();
$ip_country = Detect::ipCountry();
echo $host;
echo $date_time;
echo "IP: ". $ip_country;
?>

Answer 1

1) Your script is calling Detect class, but I don't see from where it comes. Are you including a file containing its declaration?

2) Is Detect class "mute", ie, works without verbose response?

3) If you are not getting any errors, try to add to your script first lines

error_reporting(2047); ini_set("display_errors",1);