What are the potential limitations or drawbacks of using the glob() function in PHP for directory listing?

One potential limitation of using the glob() function in PHP for directory listing is that it may not work as expected on certain systems or configurations, such as when dealing with large numbers of files or directories. To address this, you can use the opendir(), readdir(), and closedir() functions to manually read the contents of a directory, which gives you more control over the process and can be more efficient in certain cases.

$directory = '/path/to/directory';

if ($handle = opendir($directory)) {
    while (false !== ($entry = readdir($handle))) {
        if ($entry != "." && $entry != "..") {
            echo $entry . "<br>";
        }
    }
    closedir($handle);
}