What are the potential pitfalls of implementing an IP-based restriction for voting on a website using PHP?

Potential pitfalls of implementing an IP-based restriction for voting on a website using PHP include the fact that multiple users could be sharing the same IP address (such as in a corporate setting or public Wi-Fi), leading to potential restrictions for legitimate users. Additionally, IP addresses can be easily spoofed or changed, making it relatively easy for malicious users to bypass the restriction.

// Instead of relying solely on IP-based restrictions, consider implementing a combination of user authentication and session management to ensure a more secure and reliable voting system.