PHP inotify_add_watch recursive

inotify_add_watch_recursive.php

<?php

/**
 * @param resource $inotify_instance
 * @param string $pathname
 * @param int $mask
 * @return int[] watcher descriptors
 */
function inotify_add_watch_recursive ($inotify, $path, $mask)
{
    $ids = [inotify_add_watch($inotify, $path, $mask)];
    if (is_dir($path)) {
        foreach (glob($path . '/*', GLOB_ONLYDIR) as $subdir) {
            $ids[] = inotify_add_watch($inotify, $subdir, $mask);
        }
    }
    return $ids;
}