<?php session_start();          ?>
<FONT color=blue size=4>
<?php
        $op = $_POST['op'];     // "add",
        $num1 = $_SESSION['v1'];
        $num2 = $_SESSION['v2'];
        print "The num1 is $num1<BR>";
        print "The num2 is $num2<BR>";
        print "The operator is $op <HR>";
        if($op == "add")
        {
                $ans = $num1 + $num2;
                print "$num1 + $num2 = $ans";
        }
        else if($op == "sub")
        {
                $ans = $num1 - $num2;
                print "$num1 - $num2 = $ans";
        }
        else if($op == "mul")
        {
                $ans = $num1 * $num2;
                print "$num1 * $num2 = $ans";
        }
        else if($op == "div")
        {
                $ans = $num1 / $num2;
                print "$num1 / $num2 = $ans";
        }
	else if($op == "mod")
	{
		$ans = $num1 % $num2;
		print "$num1 % $num2 = $ans";
	}
	else if($op == "pwr")
	{
		$ans = bcpow($num1,$num2);
		print "$num1^$num2 = $ans";
	}
?>
</FONT>