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Method Overriding in PHP

Program 1

<html>
<head><title>Demo</title></head>
<body>
    <center>
<?php 
       class Base
       {
          public function calculation($m,$n)
          {
                  echo "Addtion is : ".$m+$n;
          }
       }
     
     class Derived extends Base  
     {
        public function calculation($m,$n)
        {
                echo "Sub is : ".$m*$n;
        }
     }

     // Object Creation
     $d=new Derived();
     $d->calculation(50,30);
?>
</center>
</body>
</html>

 

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