PHP | Exercise if | Find Greater

Q. Write a program in PHP to find greater number from two numbers. 1

<?php
    $a = 100;
    $b = 20;
    if($a > $b)	{
        echo "$a is greater than $b";
    }
    else {
        echo "$b is greater than $a";
    }
?>

100 is greater than 20

Exercise if | Input two numbers and find Greater

Q. Write a program in PHP to Input two numbers and find greater. 1

<?php
    $a=0;
    $b=0;
    if(isset($_GET['submit'])) {
        $a=$_GET['a'];
        $b=$_GET['b'];

        if($a > $b)	{
            echo "$a is greater than $b";
        }
        else {
            echo "$b is greater than $a";
        }
    }
?>
<html>
    <body>
        <form action="" method="get">
            <p>Enter 1st Number: <input type="text" name='a' value="<?php echo $a; ?>"></p>
            <p>Enter 2nd Number: <input type="text" name='b' value="<?php echo $b; ?>"></p>
            <button type="submit" name="submit">Submit
        </form>
    </body>
</html>