How can PHP developers optimize their code to minimize the impact of parallel processes on server performance?

PHP developers can optimize their code by implementing asynchronous processing using tools like ReactPHP or Swoole. By utilizing non-blocking I/O operations, developers can minimize the impact of parallel processes on server performance. Additionally, developers should consider using caching mechanisms to reduce the load on the server when handling multiple requests simultaneously.

// Example code using ReactPHP to handle asynchronous processing
$loop = React\EventLoop\Factory::create();

$loop->addPeriodicTimer(1, function () {
    echo "This code is executed asynchronously every 1 second\n";
});

$loop->run();