How can a PHP script be designed to run at specific intervals without relying on external services?

To run a PHP script at specific intervals without relying on external services, you can use a combination of PHP's sleep function and a loop. The script can be designed to run continuously, with a sleep interval set to the desired time between each execution of the script.

// Set the interval time in seconds (e.g., 60 seconds for 1 minute)
$interval = 60;

// Run the script continuously
while (true) {
    // Your PHP script logic goes here

    // Wait for the specified interval before running the script again
    sleep($interval);
}