Math with Number Template Variables?

27 Posts

kelp Reply #1, 15 years, 8 months ago

Hello,
I’m trying to have a template variable with the retail price and a template variable with the slashed price; is it possible to do some math on these numbers to find the percent discounted?

24,544 Posts

BobRay Reply #2, 15 years, 8 months ago

PHX has a math: modifier that I think would do it, but it would be much faster to just send the two TVs as parameters to a snippet and have the snippet do the math.

Something like this (untested):

Your discount is [[Discount? &retailPrice=`[*retailTV*]` &salePrice=`[*saleTV*]`]]%<br />

In the Discount snippet:

<?php
$diff = $retailPrice - $salePrice;
$discount = $diff/$retailPrice;
return($discount * 100);
?>

Did I help you? Buy me a beer
Get my Book: MODX:The Official Guide
MODX info for everyone: http://bobsguides.com/modx.html
My MODX Extras
Bob's Guides is now hosted at A2 MODX Hosting

2 Posts

scottmes Reply #3, 7 years, 11 months ago

This works perfectly for what I'm looking for. But how can I force it to round to nearest percent?
i'm getting 24.057738572574% when i need 24%

Thanks!

1 Posts

izziebee Reply #4, 6 years, 4 months ago

You can modify Bob's example to include the PHP round() function:

<?php
$diff = $retailPrice - $salePrice;
$discount = $diff/$retailPrice;
return(round($discount * 100));
?>

PHP documentation here: https://www.w3schools.com/php/func_math_round.asp