php oops concept

[sarita_dubey]

hello friends

is anybody tell me how to make class to check prime number in php ...
the input is given by user..

i tried a lot..but not able to do..

please help me..

[simran10101]

<?php

// Checks for prime numbers
Class Demo
{
function IsPrime($Num)
{
$Result = null;
$No = 0;
for($CurrNum = 2; $CurrNum <= $Num; $CurrNum++)
{
for($Divisor = 2; $Divisor < $CurrNum; $Divisor++)
{
$Res = $CurrNum / $Divisor;
if($Res != 1 && intval($Res) == $Res)
{
$No = 1;
$Divisor = $CurrNum;
}
}
if($No != 1)
{
$Result = $CurrNum;
}
$No = 0;
}

// If the only divisor is the number itself, it's prime
if($Result == $Num)
{
return 1;
}
else
{
return 0;
}
}
}

// Check for primes, 0 to 100
$d= new Demo(); // object of class
for($i = 0; $i < 100; $i++)
{
echo $i." is a prime number? ".$d->IsPrime($i)."<br />";
}
?>