About test?

Dear taecher..
I submited al php assignment.. please coret my assignment..
give me the test as early as possible

Hi,

All your assignments have been reviewed. Your PHP Test is also Reviewed.

Thanks

uma will you please help me making classes to check prime numbers...

I wrote the following code:: but its not working..

<?php

// define class

class Calculator
{

//class variables:


var $i;
//Class member functions or methods:
function Isprime($number1)
{

$this->i=$number1;
if($this->i < 2)
{
//return false;
echo "hello";
}
for($j=2;$j<=(($this->i)/2);$j++)
{
if($this->i % $j ==0)
{
//return false;
echo "hi";
}
}
//return true;
echo "welcome";

}

}

$num1=$_POST['number1'];


//Create a class instance:
$calc = new Calculator();

//Call class methods:

$calc->Isprime($num1);

//Display output:


?>

please tell me whats wrong with this