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$this Keywords in Opps

In this tutorial, you will learn about PHP $this keyword and how to use $this inside a class.



In PHP, $this keyword references the current object of the class

Here we can get a clear idea about $this keyword, Here the price of the car can access by the keyword $this, can not access outside the class.

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  <?php
 
   class Car {
    var $price;
    var $color;
    /* Member functions */
 
   function setPrice($car_price){
     $this->price = car_price;
   }
   /* Member functions */
     function getPrice(){
       echo $this->price;
    }
    /* Member functions */
 
    function setColor($car_color){
       $this->color = car_color;
    }
 
      /* Member functions */
 
    function getColor(){
       echo $this->Color;
    }
  }
 
  $carObj = new Car();
  $carObj->setPrice(500000);
 
  /* set the color of the car */
 
  $carObj->setColor("red");
  echo "The Car price: ".$carObj->getPrice();
 
  /* get the color of the car */
   echo "The Car color: ".$carObj->getColor();
 
 
 
    ---------------------------- Output-----------------------------------------
 
 
   The Car price: 500000
   The Car color: Red
 
  ?>

 

Questions asked in the Interview on $this



  1. What is $this
    Answer –  $this is a keyword in PHP
  2. How $this is used in Oops
    Answer –  This is used inside the class as a current object of the same class. By using $this we can access member functions and member variables inside the same class, outside access will show fatal error.

 

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