Are there any specific PHP functions or libraries that can streamline the process of sorting files by modification date?

To streamline the process of sorting files by modification date in PHP, you can use the `glob()` function to get a list of files in a directory, then use `filemtime()` to get the modification date of each file and sort them accordingly using `usort()` function.

$files = glob('/path/to/directory/*');
usort($files, function($a, $b) {
    return filemtime($a) < filemtime($b);
});

foreach ($files as $file) {
    echo $file . ' - Last modified: ' . date('Y-m-d H:i:s', filemtime($file)) . "\n";
}