$page){
// copy template
$errorpage = $tpl;
// assign variables
$errorpage = str_replace('{{CODE}}', intval($code), $errorpage);
$errorpage = str_replace('{{TITLE}}', nl2br(htmlspecialchars($page['title'])), $errorpage);
$errorpage = str_replace('{{MESSAGE}}', nl2br(htmlspecialchars($page['message'])), $errorpage);
// store template
file_put_contents('Build/HTTP'.intval($code).'.html', $errorpage);
}