Source Code : Three levels of inheritance

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Three levels of inheritance

<?php
   class Employee {

      private $name;
      function setName($name) {
         if ($name == "") echo "Name cannot be blank!";
            else $this->name = $name;
      }

      function getName() {
         return "My name is ".$this->name."<br />";
      }

   }
   
   class Executive extends Employee {

      function methodB() {
         echo " my yacht!";
      }
   }
   
   class CEO extends Executive {
      function methodC() {
            echo "tuck";
      }
   }

   $ceo = new CEO();
   $ceo->setName("Joe");
   $ceo->methodB();
   $ceo->methodC();

?>

           
       

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