What are some considerations to keep in mind when implementing a system in PHP where actions are triggered based on fixed time intervals rather than user interactions?

When implementing a system in PHP where actions are triggered based on fixed time intervals, it is important to consider using a cron job or a task scheduler to run the PHP script at the specified intervals. This ensures that the actions are executed automatically without relying on user interactions. Additionally, make sure to handle any potential errors or exceptions that may arise during the execution of the script.

// Example of a PHP script that runs at fixed time intervals using a cron job

// Define the action to be triggered at fixed intervals
function triggerAction() {
    // Code to execute the desired action
    echo "Action triggered at " . date('Y-m-d H:i:s') . "\n";
}

// Run the action
triggerAction();