What are the potential pitfalls of using a Cronjob to refresh a PHP page every second?

Using a Cronjob to refresh a PHP page every second can lead to excessive server load and unnecessary resource consumption. Instead, it is better to use client-side techniques like JavaScript to achieve real-time updates without burdening the server.

// Avoid using Cronjob to refresh a PHP page every second
// Instead, use client-side techniques like JavaScript for real-time updates