List all images files names in PHP file directory and export to JSON

folder-image-files-to-json.php

<?php
header("Access-Control-Allow-Origin: *");
header("Content-Type: application/json");

$exts = ["png", "jpg"];

$dir = "./";
$list = [];

if (is_dir($dir)) {
    if ($dh = opendir($dir)) {
        while (($file = readdir($dh)) != false) {
            if ($file != "." and $file != "..") {
                $fileNameParts = explode(".", $file);
                $ext = end($fileNameParts);

                if (in_array($ext, $exts)) {
                    array_push($list, $file);
                }
            }
        }
    }

    $return_array = ["files" => $list];

    echo json_encode($return_array);
}