How can we optimize PHP scripts to handle multiple user requests simultaneously without compromising performance?

To optimize PHP scripts to handle multiple user requests simultaneously without compromising performance, we can utilize asynchronous programming techniques such as using PHP extensions like ReactPHP or Swoole. These extensions allow PHP scripts to handle multiple requests concurrently without blocking, thus improving performance. 

// Example using ReactPHP
$loop = React\EventLoop\Factory::create();

$server = new React\Http\Server($loop, function (Psr\Http\Message\ServerRequestInterface $request) {
    return new React\Http\Message\Response(
        200,
        array('Content-Type' => 'text/plain'),
        "Hello World\n"
    );
});

$socket = new React\Socket\Server('0.0.0.0:8000', $loop);
$server->listen($socket);

$loop->run();

Keywords

concurrency PHP-FPM asynchronous threading load balancing

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