What are the drawbacks of using polling methods in PHP scripts for waiting for user input?

Using polling methods in PHP scripts for waiting for user input can be inefficient and resource-intensive. It involves continuously checking for user input in a loop, which can lead to high CPU usage and slow down the server. A better approach would be to use event-driven programming or asynchronous techniques to handle user input more efficiently. 

// Example of using event-driven programming with PHP
$stdin = fopen('php://stdin', 'r');
stream_set_blocking($stdin, false);

$loop = React\EventLoop\Factory::create();

$loop->addReadStream($stdin, function ($stream) use ($loop) {
    $input = trim(fgets($stream));
    
    // Handle user input here
    
    $loop->stop();
});

$loop->run();

Keywords

polling methods PHP scripts drawbacks user input waiting

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