Fix 8.1 compatibility issues: abs() and ceil() cannot handle null

Adding a reroll of #2.

Thank you for reporting the problem and for providing a patch.

Views needs to retain compatibility with PHP 5, so this won't work as-is.

I think this needs further work as none of the logic in the "else" section of that code should run if the value is NULL.

Hopefully PHP 5 can deal with this.

oops, try this.

isset() and !is_null() are a bit redundant, and neither confirm that the value is numerical.

How about this?

Seems looks good.

Looks great, thanks @DamienMcKenna

Excellent, thanks for the quick reviews.

Committed.

Automatically closed - issue fixed for 2 weeks with no activity.