Zhicken - 1 year ago 59

PHP Question

I am working with user supplied dimensions on a variety of products. Users supplied the length, width and height, but to calculate shipping costs I have take the longest measurement and set it as length and add that to the girth, which is calculated by adding the two shorter measurements and multiplying them by 2.

`$PackageSize = length + (width*2 + height*2)`

I can find which value is the highest using:

`$newlength=max($length, $width, $height);`

I can't figure out how to then figure out which are the two remaining values so I can plug them into the right place in the equation.

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Answer Source

To me, the easiest way to do this is to leverage PHP's awesome array functions.

```
// create an array from the three dimensions
$sizes = array( $length, $width, $height );
// sorts the values from smallest to largest
sort( $sizes );
// assigns the sorted values to the variables width, height, length
list( $width, $height, $length ) = $sizes;
// Now, $length is the longest dimension, $width is shortest, and $height is the middle value
```

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