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<?php
// File: session3.php
// Goal: action page for session2.php
// receives operator value from the last page and session
// values for the first form page.
session_start();
?>
<BODY style="color:blue;font-size:30px>
<H2>
General Calculater (ctd)
</H2>
<HR>
<?php
$op = $_POST['operator'];
$n1 = $_SESSION['num1'];
$n2 = $_SESSION['num2'];
// debug
echo "The calculation is as follow. <p>";
if( $op =='add')
{
$operator='+';
$ans =$n1 + $n2;
}
else if( $op =='sub')
{
$operator='-';
$ans =$n1 - $n2;
}
else if( $op =='mul')
{
$operator='*';
$ans =$n1 * $n2;
}
else if( $op =='div')
{
$operator='/';
$ans =$n1 / $n2;
}
echo "$n1 $operator $n2 = $ans <p>";
?>
</BODY>