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OOPS in PHP 5 - Polymorphism

Polymorphism in PHP5 is a technique where the function to be called is detected based on the class object calling it at runtime. The basis of Polymorphism is Inheritance and function overridden.





Example - Basic Polymorphism

< ?
class BaseClass
{
    public function myMethod()
    {
         echo "BaseClass method called";
    }
}
 
class DerivedClass extends BaseClass
{
      public function myMethod()
      {
           echo "DerivedClass method called";
      }
}
 
function processClass(BaseClass $c)
{
      $c->myMethod();
}
 
$c = new DerivedClass();
processClass($c);
?>

Output: DerivedClass method called
Explanation:
Here i am declaring BaseClass and DerivedClass but i am calling the the processClass with the Derived Class Object.

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Related Post

• OOPS in PHP 5 Tutorial - Using Interface
• OOPS in PHP 5 Tutorial - Static Keyword
• OOPS in PHP 5 Tutorial - Abstract Class
• OOPS in PHP 5 Tutorial - Parent Keyword
• OOPS in PHP 5 Tutorial - Function Overriding

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