Remove empty array elements with array_filter with a callback function

Question

I\'m trying to delete empty elements in an array with the function array_filter.

When i use an external callback like this :

function callback($a) {          


        

Answer 1

It seems that you’re using a PHP version that does not support anonymous functions (available since PHP 5.3.0).

But array_filter does already filter empty values if you don’t specify a callback function:

If no callback is supplied, all entries of input equal to FALSE (see converting to boolean) will be removed.