What are some best practices for efficiently searching and filtering file names in a folder structure using PHP?

When searching and filtering file names in a folder structure using PHP, it is important to efficiently iterate through the files and use filtering techniques to narrow down the results. One approach is to use the `glob()` function to retrieve an array of file names based on a pattern, and then apply additional filtering using PHP functions such as `array_filter()` or regular expressions.

// Specify the folder path
$folderPath = 'path/to/folder';

// Get an array of file names using glob with a specific pattern
$files = glob($folderPath . '/*.txt');

// Filter the file names based on a specific criteria
$filteredFiles = array_filter($files, function($file) {
    return preg_match('/pattern/', $file); // Use regular expression for filtering
});

// Output the filtered file names
foreach ($filteredFiles as $file) {
    echo $file . PHP_EOL;
}