Online PHP editor | refs for 31Ft8

@ 2017-03-16T13:49:37Z

<?php


class A {
    protected $a = 'a';
}

class B implements \JsonSerialize {
    protected $a;
    
    function __construct(A $a)
    {
        $this->a = $a;
    }
    
    public function jsonSerialize()
    {
        return [
            'a' => $this->a
            ];
    }
}


$b = new B(new A());

echo json_encode($b);