<?php

class Akuma {
    private $value;
    public function __construct(int $value)
    {
        $this->value = $value;
    }

    public function echoValue()
    {
        echo "{$this->value}\n";
    }
}

$obj = new Akuma(3);
$obj->echoValue();
$obj->__construct(5);
$obj->echoValue();