public static function prevent_listing()
{
MainWPSecurity::init_listingDirectories();
foreach (MainWPSecurity::$listingDirectories as $directory) {
$file = $directory . DIRECTORY_SEPARATOR . 'index.php';
if (!file_exists($file)) {
$h = fopen($file, 'w');
fwrite($h, '<?php die(); ?>');
fclose($h);
}
}
}
