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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