Add is_numeric() function to check if variable is numeric

[bertoost]

Title says enough I guess ;-)
Currently using this simple registered function

new \Twig_SimpleFunction('is_numeric', function ($str) {
    return is_numeric($str);
})

[stof]

this should not be a function. It should be a test if you want to add it (making it look like foobar is numeric.

However, what is the use case for having it. I'm not sure it belongs to the core

[bertoost]

A test would be great indeed. Didn't thought about that.

A use case...
I am getting data through some API's and sometimes a specific value is a numeric ID instead of a text string. But when numeric, I don't want to show it, or show something as "Unknown".

[SpacePossum]

( @bertoost you can check here (for a sample implementation) https://github.com/GeckoPackages/Twig , disclaimer I wrote it)

[fabpot]

Closing as it won't be added in Twig core, Adding it in an extension is easy enough though.

[alexislefebvre]

You can find an implementation here: https://stackoverflow.com/a/52946699/2257664