PHP code example of phonad / core

1. Go to this page and download the library: Download phonad/core library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

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

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

phonad / core example snippets




use Phonad\Core\Data\Maybe;

$val = Maybe::of(10)
    ->map(fn($n) => $n * 2)
    ->orElse(0); // 20




use Phonad\Core\Data\Either;

$res = Either::Right(10)
    ->flatMap(fn($n) => $n > 5 ? Either::Right($n) : Either::Left("Too small"))
    ->either(fn($err) => "Error: $err", fn($val) => "Value: $val");




use Phonad\Core\Data\ImmutableList;

$list = ImmutableList::from([1, 2, 3])
    ->cons(0)
    ->filter(fn($n) => $n > 0); // [1, 2, 3]




use Phonad\Core\Effect\Reader;

$logic = Reader::ask()->map(fn($env) => "Env is: " . $env['mode']);
echo $logic->run(['mode' => 'production']);




use Phonad\Core\Effect\Writer;

[$val, $logs] = Writer::of(10)
    ->flatMap(fn($n) => Writer::of($n + 1, ["Incremented"]))
    ->run();




use Phonad\Core\Effect\IO;

// Wrap the effect into the `IO` monad
$sayHello = fn(string $name) => IO::make(function () use ($name) {
    echo "Hello, $name!";
});

// Chain the logic (nothing actually happens yet)
$program = IO::of('world')
    ->map('strtoupper')
    ->flatMap(fn($name) => $sayHello($name));

// FIRE!
$program->run();  // Outputs: Hello, WORLD!