PHP Class and Object

Copy<?php
class Employee {
  public $name;
  public $age;
  public $salary;
}

$emp1 = new Employee();
$emp1->name = "Aryan";
$emp1->age = 25;
$emp1->salary = 50000;

echo "Name: $emp1->name\n";
echo "Age: $emp1->age\n";
echo "Salary: ₹$emp1->salary";
?>

Copy<?php
class Employee {
  public $name, $age, $salary;

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

  function display() {
    echo "Name: $this->name, Age: $this->age, Salary: ₹$this->salary\n";
  }
}

$emp = new Employee("Sita", 28, 70000);
$emp->display();
?>

Copy<?php
class Employee {
  public $name, $salary;

  function __construct($name, $salary) {
    $this->name = $name;
    $this->salary = $salary;
  }

  function addBonus($amount) {
    $this->salary += $amount;
  }

  function show() {
    echo "Employee: $this->name, Final Salary: ₹$this->salary\n";
  }
}

$emp = new Employee("Kiran", 80000);
$emp->addBonus(5000);
$emp->show();
?>

Copy<?php
class Employee {
  private $name, $age, $salary;

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

  function getDetails() {
    return "Name: $this->name, Age: $this->age, Salary: ₹$this->salary";
  }
}

$emp = new Employee("Anjali", 32, 95000);
echo $emp->getDetails();
?>

Copy<?php
class Employee {
  public $name, $age, $salary;

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

  function show() {
    echo "Name: $this->name | Age: $this->age | Salary: ₹$this->salary\n";
  }
}

$employees = [
  new Employee("Amit", 26, 40000),
  new Employee("Priya", 29, 55000),
  new Employee("Vikram", 31, 62000)
];

foreach ($employees as $emp) {
  $emp->show();
}
?>