Class object in php

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As we know we can write object oriented code in php so class and objects are being created.Object oriented programming is easy to use and easy to manage.

We can create class in php as class <classname> . Class which is the collection of similar type elements and object is the instance of class

Class in PHP

 Syntax of the class
 <?php
  class <class-name>
   {
    // class code here
   }?>

<?php
  class Student
   { 
    public $name="john", $age=25;// property or variable
     function display()
    {
     echo "Name=$this->name";
	 echo "<br>Age=$this->age";
    }
   }
 
   $s1= new Student(); //how object is being created of a class
   $s1->display();     //how we call the function with object name
 ?>

output of the following program is as follows.

<?php
  class Box
   { 
    public $length=0;
    public $breadth=0;
    public $area=0;

     function setValues($l,$b)
    {
        $this->length=$l;
	    $this->breadth=$b;
    }
    function calArea()
    {
     $area=$this->length*$this->breadth;
     echo "area= $area";  //this function may return the value as well
     }
   }   // end of class
   $b1= new Box();
   $b1->setValues(20,10);
   $b1->calArea();
  ?>

output of the following program is as follows.

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Class object in php

Class in PHP

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