Warning: Use of undefined constant false - assumed 'false' (this will throw an Error in a future version of PHP) in /var/www/html/index.php on line 3

Fatal error: Uncaught Error: Call to undefined function http_response_code() in /var/www/html/index.php:5 Stack trace: #0 {main} thrown in /var/www/html/index.php on line 5