Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

PHP PHP Basics Unit Converter Manipulating Numbers

Posted by Donough Sugrue
Donough Sugrue
352 Points

Does this code not change the value of IntegerOne ? var_dump($integerOne + 5);

The compiler says the value of integerOne hasn't been changed, yet I've gone back over the tutorials and repeated what was done there but my code doesn't work. Don't understand why ? Thanks

index.php 
<?php

//Place your code below this comment
$integerOne = 1;
$integerTwo = 2;
var_dump($integerOne + 5);
var_dump($integerTwo - 1);
?>

1 Answer

Martin Balon
Martin Balon
43,433 Points

Try this code instead:

<?php
//Place your code below this comment
$integerOne = 1;
$integerTwo = 2;

$integerOne += 5;
$integerTwo -= 1;
?>
Donough Sugrue
Donough Sugrue
352 Points

Ok, I see what you did. Thanks Martin