Private object hydration via closure

example.php

<?php

use function Magic\hydrate;

class Foo
{
    private $cute;
    private $clever;
    
    public function __construct(array $values)
    {
        hydrate($values)->call($this);
    }
}

hydrate.php

<?php

namespace Magic;

/**
 * Create a hydrator from an array.
 * 
 * @param array $values
 * 
 * @return Closure
 */
function hydrate(array $values)
{
    return function () use ($values) {
        foreach ($values as $key => $value) {
            $this->$key = $value;
        }
    };
}

usage.php

<?php

$foo = new Foo([
    'cute' => 'sure',
    'clever' => true,
]);


var_dump($foo);

This only works in PHP 7+.