<?php
$images = [];
$path = '/var/www/hawkers-dpa-white-bkgr/DPA/';
$files = scandir($path);

print_r($files);

foreach ($files as $file) {
    if ($file != '..' && $file != '.' && $file != 'files.php' && $file != 'images.json') {
        $images["images"][] = $file;
    }
}

file_put_contents($path.'/images.json', json_encode($images));