Richard Lyon

I've had no emails from people wanting to use with old PHP versions, so I am happy to recommend that this initiative go ahead. To support old versions of PHP...

This is a bug in how lists are parsed; the argument $prefixes is never seen as a "list", just as a string. Not entirely sure how to force it to...

It's probably that it's calculating the input arguments before trying to run the function - so when do you do: calc(32px \* 3) it resolves to calc(96px) and then says...

In the first example we are mixing percentages and ems - unfortunately, there is no way to combine the two in a calculation in a meaningful way (or at least...