php函数删除超过1天的所有文件和文件夹

function deleteFiles($dir) {
    $files = scandir($dir);
    
    foreach ($files as $file) {
        if ($file == '.' || $file == '..') {
            continue;
        }
        
        $path = $dir . '/' . $file;
        
        if (is_file($path)) {
            $modifiedTime = filemtime($path);
            $currentTime = time();
            $timeDiff = $currentTime - $modifiedTime;
            
            if ($timeDiff > 86400) { // 86400秒 = 1天
                unlink($path);
            }
        } elseif (is_dir($path)) {
            deleteFiles($path);
            rmdir($path);
        }
    }
}

$directory = '/path/to/directory';
deleteFiles($directory);