代码点火器cookie在本地开发环境中的行为与在实际站点上的行为不同

Question

I see $config['sess_expiration'] = 7200;

However, when I inspect my cookie, I can see on the live site it expires after 1 year and it's constantly updating. And on my local dev env, I inspect the cookie and see it expires after 10 min and stays static.

Any one have any insight?

This is code that I inherited and I'm not familiar with code igniter, so please let me know if there is any additional information you'd need in order to help.