try to use Dropbox API

README.txt

1. pear channel-discover pear.dropbox-php.com
2. pear install --all-deps dropbox-php/Dropbox-beta
3. install the OAuth library with PEAR
4. get and set CONSUMER_KEY_* and CONSUMER_SECRET_* from https://dropbox.com/developers/apps
5. run this script!

dropbox_api.php

<?php

//
//  Constants
//

const CONSUMER_KEY_FULL    = '';
const CONSUMER_SECRET_FULL = '';
const CONSUMER_KEY_APP     = '';
const CONSUMER_SECRET_APP  = '';

// ----------------------------

session_start();
require_once 'Dropbox/autoload.php';


//
//
//  Full Dropbox
//
//

  print "<h2>Full Dropbox</h2>";

  $auth  = auth(CONSUMER_KEY_FULL, CONSUMER_SECRET_FULL);
  $oauth = $auth['oauth'];

  switch($auth['state']){

    case 'getAuthURL':
      print "the authorize page is at ".$auth['authURL'].PHP_EOL;
      exit();

  }

  $dropbox = new Dropbox_API($oauth, 'dropbox');


  //
  //  upload this script file
  //

  $dropbox->putFile(basename($_SERVER['PHP_SELF']), basename($_SERVER['PHP_SELF']));


  //
  //  show files and directories in the root directory
  //

  $root = $dropbox->getMetaData('/');
  $dirs = $root['contents'];

  foreach($dirs as $dir){

    $name = basename($dir['path']);

    print <<< HDOC
  <b>{$name}</b><br>
    revision:&nbsp;{$dir['revision']}<br>
    modified:&nbsp;{$dir['modified']}<br>
  <br>
HDOC;
  }

  print "<br><hr><br>";

//
//
//  App folder
//
//

  print "<h2>App Folder</h2>";

  $auth  = auth(CONSUMER_KEY_APP, CONSUMER_SECRET_APP);
  $oauth = $auth['oauth'];

  switch($auth['state']){

    case 'getAuthURL':
      print "the authorize page is at ".$auth['authURL'].PHP_EOL;
      exit();

  }

  $dropbox = new Dropbox_API($oauth, 'sandbox');


  //
  //  upload this script file
  //

  $dropbox->putFile(basename($_SERVER['PHP_SELF']), basename($_SERVER['PHP_SELF']));


  //
  //  show files and directories in the root directory
  //

  $root = $dropbox->getMetaData('/');
  $dirs = $root['contents'];

  foreach($dirs as $dir){

    $name = basename($dir['path']);

    print <<< HDOC
  <b>{$name}</b><br>
    revision:&nbsp;{$dir['revision']}<br>
    modified:&nbsp;{$dir['modified']}<br>
  <br>
HDOC;
  }


  exit();



//
//
//  Function: auth
//
//

function auth ($consumerKey, $consumerSecret){

  $oauth = new Dropbox_OAuth_PEAR($consumerKey, $consumerSecret);

  $stateStr = '';
  $authURL  = '';


  //
  //  You can use the OAuth extention in PECL.
  //  This script uses PEAR's one.
  //

  //return new Dropbox_OAuth_PHP($consumerKey, $consumerSecret);

  // There are multiple steps in this workflow, we keep a 'state number' here
  $state = (isset($_SESSION[$consumerKey]['oauth_state']))? $_SESSION[$consumerKey]['oauth_state'] : 1;

  switch($state){

    //
    // State 1: get authorize page URL
    //

    case 1:
      $_SESSION[$consumerKey]['oauth_state']  = 2;
      $_SESSION[$consumerKey]['oauth_tokens'] = $oauth->getRequestToken();
      $stateStr                 = 'getAuthURL';
      $authURL                  = $oauth->getAuthorizeUrl();
      break;


    //
    //  State 2: get OAuth tokens
    //

    case 2:
        $oauth->setToken($_SESSION[$consumerKey]['oauth_tokens']);
        $_SESSION[$consumerKey]['oauth_state']   = 3;
        $_SESSION[$consumerKey]['oauth_tokens']  = $oauth->getAccessToken();
        $stateStr                  = 'getOAuthTokens';

        // go to State 3 without break to set OAuth tokens


    //
    //  State 3: set OAuth tokens
    //

    case 3:
        $oauth->setToken($_SESSION[$consumerKey]['oauth_tokens']);
        $stateStr = 'setOAuthTokens';
        break;
  }

  return array(
                'state'    => $stateStr,
                'authURL'  => $authURL,
                'oauth'    => $oauth
               );
}