<?php

class Student
{
    private $name;

    private $age;

    private $email;

    public function __construct($name, $age, $email)
    {
        $this->name = $name;
        $this->age = $age;
        $this->email = $email;
    }

    public function getName()
    {
        return $this->name;
    }

    public function getEmail()
    {
        return $this->email;
    }

    public function getAge()
    {
        return $this->age;
    }
}

class StudentWelcomeEmailSender
{
    /**
     * @var Student
     */
    private $student;

    /**
     * @param Student $student
     */
    public function __construct(Student $student)
    {
        $this->student = $student;
    }

    public function sendMessage()
    {
        $emailMessage = sprintf(
            "Multumim pentru inscriere, %s. Contul tau a fost setat. " .
            "In curand vei primi un email de notificare.",
            $this->student->getName()
        );

        return mail($this->student->getEmail(), 'Salut!', $emailMessage);
    }
}

$student = new Student('Gigi Kent 8', 20, 'gigi@kent.opt');

$welcomeMailSender = new StudentWelcomeEmailSender($student);
$welcomeMailSender->sendMessage();