Dropbox SDK Easy to use

require_once 'dropbox.class.php';
$dropb = new dropbox_neatek_class('HERE_IS_YOUR_TOKEN');

Example (share files in folder):

$params = array(
 'cursor'=> $cursor, // you can get cursor - get_lastest_cursor($folder = '', $params = array())
 'sdk_dp_save'=>true
);
$data = $dropb->request('files', 'list_folder/continue', $params);
foreach ($dropb->get_entries() as $key => $value) {
 $dropb->entry($key);
 if($dropb->entry_is_file() && !$dropb->entry_deleted()) {
 	var_dump($dropb->entry_filepath());
 	var_dump($dropb->heavy_share_path($dropb->entry_filepath(),true));
 }
}

Share file (as well as above, but more code)

$data = $dropb->request('files', 'list_folder/continue', $params);
foreach ($dropb->get_entries() as $key => $value) {
	
	$dropb->entry($key);
	
	if($dropb->entry_is_file() && !$dropb->entry_deleted()) {
		
		var_dump($dropb->entry_filepath());
		
		$dropb->share_path_or_file(
			array(
				'sdk_dp_save' => true, // support next - show_last()
				'path' => $dropb->entry_filepath()
			)
		);
		
		var_dump($dropb->get_shared_link());
		$dropb->show_last(); // file can be already shared, so we can see errors here.
		$params = array(
			'sdk_dp_save' => true,
			'path' => $dropb->entry_filepath()
		);
		var_dump($params);
		
		$data = $dropb->request('sharing', 'list_shared_links', $params);
		//$dropb->show_last();
		//$dropb->show_lastest_params();
		var_dump($dropb->get_shared_links());
		var_dump($dropb->get_shared_link(true));
	}
}