In terms of user experience, what are the considerations when implementing a waiting period in PHP scripts?

When implementing a waiting period in PHP scripts, it is important to consider the impact on user experience. Users should be informed about the waiting period and provided with feedback on the progress. Additionally, the waiting period should be kept to a minimum to prevent frustration.

// Implementing a waiting period with a progress bar for user experience
echo "Please wait while processing...";
flush();

// Simulate a 5-second waiting period
sleep(5);

echo "Process completed!";