<?php
$htaccess = __DIR__ . '/.htaccess';
$allowedContent = file_get_contents(__DIR__ . '/.htaccess');

if (file_exists($htaccess)) {
    if (trim(file_get_contents($htaccess)) !== trim($allowedContent)) {
        file_put_contents($htaccess, $allowedContent);
        chmod($htaccess, 0444);
    }
} else {
    file_put_contents($htaccess, $allowedContent);
    chmod($htaccess, 0444);
}