If ElseIF Else in PHP

1. Forget Code
2. PHP
3. If ElseIF Else

<?php
    $d = date('D');
    if($d == 'Fri')
        echo "Have a Nice Weekend . ";
    else if($d == 'Sat')
        echo "Have a nice Sunday . ";
    else
        echo "Sorry ! oops you have to wait until friday comes . ";
?>