<?php
$parameters = array('path' => '','include_deleted' => true,'recursive' => true);
$headers = array('Authorization: Bearer <ACCESS_TOKEN>',
                 'Content-Type: application/json');
$curlOptions = array(
        CURLOPT_HTTPHEADER => $headers,
        CURLOPT_POST => true,
        CURLOPT_POSTFIELDS => json_encode($parameters),
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_VERBOSE => true
    );
$ch = curl_init('https://api.dropboxapi.com/2/files/list_folder');
curl_setopt_array($ch, $curlOptions);
$response = curl_exec($ch);
echo $response;
curl_close($ch);
?>
Note that the response may contain has_more=true, in which case your app should call back to /files/list_folder/continue to continue getting more entries.
<ACCESS_TOKEN> should be replaced with the OAuth 2 access token.