限制文件夹中php脚本搜索文件的结果

$folder = '/path/to/folder';
$keyword = 'search_keyword';

$files = scandir($folder);
$results = array();

foreach ($files as $file) {
    if (strpos($file, $keyword) !== false) {
        $results[] = $file;
    }
}

print_r($results);

$folder = '/path/to/folder';
$extension = 'php';

$files = scandir($folder);
$results = array();

foreach ($files as $file) {
    $fileInfo = pathinfo($file);
    if (isset($fileInfo['extension']) && $fileInfo['extension'] === $extension) {
        $results[] = $file;
    }
}

print_r($results);

function searchFiles($folder, $keyword) {
    $files = scandir($folder);
    $results = array();

    foreach ($files as $file) {
        if ($file === '.' || $file === '..') {
            continue;
        }

        $filePath = $folder . '/' . $file;

        if (is_dir($filePath)) {
            $results = array_merge($results, searchFiles($filePath, $keyword));
        } else {
            if (strpos($file, $keyword) !== false) {
                $results[] = $filePath;
            }
        }
    }

    return $results;
}

$folder = '/path/to/folder';
$keyword = 'search_keyword';

$results = searchFiles($folder, $keyword);
print_r($results);