encapsulation.php

<?php
//encapsulation using private properties
class bankAccount{
	private $balance=0; 
	public function deposit ($amount){
		$this->balance+=$amount;
	}

	public function withdraw ($amount){
		if($amount <= $this->balance){
			$this->balance-=$amount;
		}
		else{
			echo "insufficient balance<br>";
		}
	}
	public function checkBalance(){
		echo "current balance: Rs. $this->balance<br>";
	}
}
$account=new bankAccount();
$account->deposit(1000);
$account->withdraw(3000);
$account->checkBalance();


class Student{
	public $name;
	public $class;

	public function setDetails($name,$class){
$this->name=$name;
$this->class=$class;
	}
public function showDetails(){
	echo "student name:$this->name, class:$this->class";
}
}
$student1= new Student();
$student1-> setDetails("Greesma","4th semester");
$student1->showDetails();
?>