PHP if elseif

That can get big very quickly in complex pages.  In PHP there is a shorthand way available as well although arguably it makes the structure less obvious.

Create a new page called elseif.php and paste this in below the h1:

$firstvalue=34;
$secondvalue=32;
if ($firstvalue==$secondvalue) {
    echo "<p>the values are the same</p>";
} elseif ($firstvalue<$secondvalue) {
    echo "<p>the first value is smaller</p>";
} else {
    echo "<p>the second value is smaller</p>";
}

Play with the numbers and consider the messages until you understand how it works.  It is exactly the same as doing this but shorter:

if ($firstvalue==$secondvalue) {
    echo "<p>the values are the same</p>";
} else {
    if ($firstvalue<$secondvalue) {
    echo "<p>the first value is smaller</p>";
    } else {
    echo "<p>the second value is smaller</p>";
    }
}