Force https PHP

index.php

<?php

/**
 * Force to redirect to https
 *
 * @return void
 */
function forceHttps()
{
	// check already https
	if (isset($_SERVER['https']) && $_SERVER['https'] != null) return;
	// check local
	if (strpos($_SERVER['HTTP_HOST'], 'localhost') !== false) return;

	header("HTTP/1.1 301 Moved Permanently");
	header("Reason: HTTPS");
	header("Location: https://{$_SERVER['HTTP_HOST']}{$_SERVER['REQUEST_URI']}");
	die;
};

forceHttps();