Method Overloading in PHP using magic methods

PHP Doesn't supporting polymorphism concept method overloading, Instead of this, php provides solution by the magic characters.

In the below program __call() is one of the magic method which is automatically called, when any one of the instance methods are called.
<?php
class methodOverLoading
{
    public function __call($fname,$arguments)
    {
        if($fname==='sum')
        {
            if(count($arguments)===0){
            return $this->sum();
            }
            if(count($arguments)===1){
                return $this->sum2($arguments[0],$arguments[1]);
            }
        }
    }
    public function sum()
    {
        echo "OutPut from sum()<br/>";
    }
    public function sum2($x,$y)
    {
        echo "Output from sum2()<br/>";
    }
}
$omol=new methodOverLoading();
$omol->sum();
$omol->sum2();

?>

Output:

Method OverLoading doesn't supporting example
Result = 20
Method OverRidding supporting example
Parent : Passing value to parent
Child : Passing Value to Child
OutPut from sum()
Output from sum2()