Im uploading files with the uploadify plugin. the PHP SESSION is lost during upload, is there a way to restore the session? Perhaps by its id?
Yes. You need to add an option to uploadify:
$('#upload').uploadify({
'scriptData':{'session_name':"<?php echo session_id(); ?>"}
});
And you need to add this to your PHP:
<?php
session_id($_POST['session_name']);
session_start();
?>
Then everything will be as expected.