3.Write PHP script to demonstrate the concept of introspection for examining object.

Assignment 1 : Practice set Q.3 Solution

Write PHP script to demonstrate the concept of introspection for examining object.

Index.html

          
      <?php

/*

  class_exists()->parameter-class;

  get_declared_class();

  get_class_methods();

  get_class_vars();

  is_object();-> parameter-obj name

  get_class();->parameter-object

  method_exists();-> parameter- obj,method name


*/


  class student
  {
    public $sname,$sid,$per;

    function __construct($sn,$sid,$sper)
    {
      $this->sname = $sn ;
      $this->sid = $sid ;
      $this->per = $sper ;      
    }

    function display_data()
    {
      echo"$this->sname<br>$this->sid<br>$this->per<br>";
    }
  }

  $s1=new student("rohit",101,92);

  $s1->display_data();

  echo "Does class exists?:";
  echo  class_exists("student")?'Yes':'No';

  $classes=get_declared_classes();
  echo "Declared classes:";
  print_r($classes);

  
  $classemethods=get_class_methods("student");
  echo "<br><br>Class Methods:";
  print_r($classemethods);


  $classemethods=get_class_vars("student");
  echo "<br><br>Class variables:";
  print_r($classemethods);

  
  echo "<br><br>Is s1 an object?:";
  echo  is_object($s1)?'Yes':'No';


  
  $classes=get_class($s1);
  echo "<br><br>Class of S1 classes:";
  print_r($classes);


  
  echo "<br><br>Construct exists?:";
  echo  method_exists($s1,"__construct")?'Yes':'No';
?>