PHP会话传播

I'm using win10 + wampserver3.0.6 x64. And the WAMP server and PHP 7 work well together. When I change it to nginx with php7 and wampserver3.0.6 x64, it still works well.

When I download php7 from official website. And I edit the new php.ini according to the php.ini which in wamp64.the session can's spread!

But I find the sea the config in php-b is session.auto_start = 0! I download a PhpStudy for test when in different php version it work. I find they are all set session.auto_start = 0! Finally I just understand php in integrated package are all set session.auto_start = 0 I feel lost~! Dose anyone can solve my doubt~! Why did this happen?

first you have to read what have been removed and edited in php (session.configuration) versions

and you can see all those changes on that official php link :

http://php.net/manual/en/session.configuration.php

after that according to your version you will know what you can edit in php.ini and what you can not