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PHP PHP Basics Unit Converter Manipulating Numbers

Natasha Brame
Natasha Brame
1,091 Points
Posted by Natasha Brame
Natasha Brame
1,091 Points

Adding to integers

I am currently carrying out challenge task 2 out of 3 in the unit converter for manipulating numbers. I am struggling to understand how to answer this question. If someone is able to help.

index.php 
<?php

//Place your code below this comment
$integerOne = 1;
$integerTwo = 2;
$floatOne = 1.5;
var_dump($integerOne + 5);
var_dump(integerTwo - 1);
?>

1 Answer

Steven Parker
Steven Parker
243,134 Points
Steven Parker
Steven Parker
243,134 Points

The instructions say "Add 5 to $integerOne. Subtract 1 from $integerTwo.", but as the error message ("Bummer: You haven't changed $integerOne") tells you, the current code only displays the increased value, it does not change the value stored in the variable.

To do that, you'd need an assignment, like: $integerOne = $integerOne + 5;, or the more compact form: $integerOne += 5;

Also, the instructions don't ask you to display the changed value.