Question

I need some help with a small php problem. But i dont know how to approach it.

There is a function called

<td><?=$currentCourse['price']?></td>

What i need this function to do is to take 20% off whatever the $currentCourse[‘price’].

Answer 1

For creating a function, you need to use () and not []. The [] is used to get the array index for arrays!

For your function, you can do this:

<?php
    function currentCourse($price)
    {
        return ($price * 0.8);
    }
?>

Or if you wanna use the same thing without a function, you can do this way:

<td><?=($currentCourse['price'] * 0.8)?></td>

But instead of using short tags, I would suggest you to use this:

<td><?php echo ($currentCourse['price'] * 0.8); ?></td>

Coz, by default, short_tags are Off.

Round Function

<?php
    echo round(3.4);         // 3
    echo round(3.5);         // 4
    echo round(3.6);         // 4
    echo round(3.6, 0);      // 4
    echo round(1.95583, 2);  // 1.96
    echo round(1241757, -3); // 1242000
    echo round(5.045, 2);    // 5.05
    echo round(5.055, 2);    // 5.06
?>