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<?php declare(strict_types = 1);
namespace MailPoet\Util;
if (!defined('ABSPATH')) exit;
use MailPoet\WP\Functions as WPFunctions;
class Headers {
public static function setNoCacheHeaders(): void {
$wp = WPFunctions::get();
if ($wp->headersSent()) {
return;
}
// Set default no-cache headers:
header('Cache-Control: no-cache, no-store, must-revalidate'); // HTTP 1.1+
header('Pragma: no-cache'); // HTTP 1.0
header('Expires: 0'); // proxies
header('X-Cache-Enabled: False'); // SG Optimizer on SiteGround
header('X-LiteSpeed-Cache-Control: no-cache'); // LiteSpeed server
// Use WP-native nocache_headers(). This can override the defaults above.
$wp->nocacheHeaders();
}
}