Ask about Flash MX (PHP) Remoting's Tutorial

[owenpoon]

hi ,
this is my first time post a message. I come from Hong Kong and my english is not good. Hope everyone can get what i say.

First i want to thank you Jesse Stratford,
he wrote a tutorial let me easy to start learning AMFPHP,
i have follow the step in the tutorial,
but when i test to run the talk.fla file
it cannot get the value from the talkback.php file, and have some error like this

Status (object #2)
.....code: 8
.....description: "Undefined variable: _SESSION"
.....details: "C:\var\www\Site1\flashservices\util\Authenticate.p hp"
.....level: "Notice"
.....line: 29

i think this is my php setting problem,
i changed "Error handling and logging" setting in php.ini

now setting: error_reporting = E_COMPILE_ERROR|E_ERROR|E_CORE_ERROR
before setting: error_reporting = E_ALL; display all errors, warnings and notices

after change it , it works!

but i have some problem want to ask
I have see the tutorial's php code , but don't know where the session create.
I want to show back all error in php (before's php.ini setting).

Hope everyone can know what i talking about, thx your help! :)