PHP code example of recoil / recoil

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

recoil / recoil example snippets

use Recoil\React\ReactKernel;
use Recoil\Recoil;

function resolveDomainName(string $name, React\Dns\Resolver\Resolver $resolver)
{
    try {
        $ip = yield $resolver->resolve($name);
        echo 'Resolved "' . $name . '" to ' . $ip . PHP_EOL;
    } catch (Exception $e) {
        echo 'Failed to resolve "' . $name . '" - ' . $e->getMessage() . PHP_EOL;
    }
}

ReactKernel::start(function () {
    // Create a React DNS resolver ...
    $resolver = (new React\Dns\Resolver\Factory)->create(
        '8.8.8.8',
        yield Recoil::eventLoop()
    );

    // Concurrently resolve three domain names ...
    yield [
        resolveDomainName('recoil.io', $resolver),
        resolveDomainName('php.net', $resolver),
        resolveDomainName('probably-wont-resolve', $resolver),
    ];
});

ReactKernel::start(
    function () {
        echo 'Hello, world!' . PHP_EOL;
        yield;
    }
);

function hello()
{
    echo 'Hello, ';
    yield;
}

function world()
{
    echo 'world!' . PHP_EOL;
    yield;
}

ReactKernel::start(function () {
    yield hello();
    yield world();
});

function multiply($a, $b)
{
    yield; // force PHP to parse this function as a generator
    return $a * $b;
    echo 'This code is never reached.';
}

ReactKernel::start(function () {
    $result = yield multiply(2, 3);
    echo '2 * 3 is ' . $result . PHP_EOL;
});

function multiply($a, $b)
{
    if (!is_numeric($a) || !is_numeric($b)) {
        throw new InvalidArgumentException();
    }

    yield; // force PHP to parse this function as a generator
    return $a * $b;
}

ReactKernel::start(function() {
    try {
        yield multiply(1, 'foo');
    } catch (InvalidArgumentException $e) {
        echo 'Invalid argument!';
    }
});