oop.php

<?php
	class Person {
		private $name;
		private $email;
		private static $ageLimit = 40;

		public function __construct($name, $email) {
			$this->name = $name;
			$this->email = $email;
			echo __CLASS__.' created<br>';
		}

		public function __destruct() {
			echo __CLASS__.' destroyed<br>';
		}

		public function setName($name) {
			$this->name = $name;
		}

		public function getName() {
			return $this->name.'<br>';
		}

		public function setEmail($email) {
			$this->email = $email;
		}

		public function getEmail() {
			return $this->email.'<br>';
		}

		public static function getAgeLimit() {
			return self::$ageLimit;
		}
	}

	# Static properties and methods
	// echo Person::$ageLimit;
	echo Person::getAgeLimit();

	// $person1 = new Person('John Doe', 'john@gmail.com');

	// $person1->setName('John Doe');
	// echo $person1->getName();

	// $person1->name = "John Doe";
	// echo $person1->name;

	class Customer extends Person {
		private $balance;

		public function __construct($name, $email, $balance) {
			parent::__construct($name, $email);
			$this->balance = $balance;
			echo 'A new '.__CLASS__.' has been created<br>';
		}

		public function setBalance($balance) {
			$this->balance = $balance;
		}

		public function getBalance() {
			return $this->balance.'<br>';
		}
	}

	// $customer1 = new Customer('John Doe', 'john@gmail.com', 300);

	// echo $customer1->getBalance();
?>