What potential issues can arise from setting session.cache_expire to 0?

Setting session.cache_expire to 0 can result in sessions never expiring, leading to potential security risks such as session hijacking and increased server resource usage. To solve this issue, it is recommended to set a reasonable value for session.cache_expire to ensure that sessions are properly expired and cleared.

// Set session.cache_expire to a reasonable value (e.g. 30 minutes)
ini_set('session.cache_expire', 30);