Why can't I access session variables from my AJAX-called PHP script?

Question

I have one PHP script with a session variable, set like so:

$_SESSION[\'VAR1\'] = \"test\"

Now, I am using AJAX via a jQuery-initiated POST

Answer 1

My own error was BOM character in my ajax file.I was need to use session variable in a ajax called php file.I tried to start session by session_start() but "cannot modify header information" occurs.I removed BOM character and code works very well.