What are some best practices for optimizing PHP scripts to prevent endless loops and improve performance?

To prevent endless loops in PHP scripts and improve performance, it is essential to set a maximum execution time limit using the `set_time_limit()` function. This function restricts the maximum execution time of the script, preventing it from running indefinitely. Additionally, using proper coding practices such as implementing efficient algorithms and avoiding unnecessary recursive functions can help optimize PHP scripts.

// Set a maximum execution time limit of 30 seconds
set_time_limit(30);

// Your PHP script code here