folderweb/app/cache.php

<?php

function getCachedMarkdown(string $filePath, string $langPrefix = ''): ?string {
    $cacheDir = '/tmp/folderweb_cache';
    $mtime = filemtime($filePath);
    $cacheKey = md5($filePath . $mtime . $langPrefix);
    $cachePath = "$cacheDir/$cacheKey";
    
    if (file_exists($cachePath)) {
        return file_get_contents($cachePath);
    }
    
    return null;
}

function setCachedMarkdown(string $filePath, string $html, string $langPrefix = ''): void {
    $cacheDir = '/tmp/folderweb_cache';
    if (!is_dir($cacheDir)) {
        mkdir($cacheDir, 0755, true);
    }
    
    $mtime = filemtime($filePath);
    $cacheKey = md5($filePath . $mtime . $langPrefix);
    $cachePath = "$cacheDir/$cacheKey";
    
    file_put_contents($cachePath, $html);
}