qn2

 <h2>program to swap two numbers</h2>

<form method="post">

First Number : 

<input type="text" name="num1"><br><br>

Second Number :

<input type="text" name="num2"><br><br>

<input type="submit" name="submit" value="submit">

</form>

<?php

if(isset($_POST['submit'])) {

$a=$_POST['num1'];

$b=$_POST['num2'];

echo " Before swapping ";

echo " <br>First Number ".$a;

echo " <br> Second Number ".$b;

$temp=$a;

$a=$b;

$b=$temp;

echo " <br>After swapping ";

echo "<br>First Number ".$a;

echo "<br> Second Number ".$b;

}

?>

<p>Author : Sujit Thapa</p>