How to check if something is countable?

Question

I have a var: $a. I don\'t know what it is. I want to check if I can count it. Usually, with only array, I can do this:

if (is_array($a)) {
             


        

Answer 1

PHP 7.3

According to the documentation, You can use is_countable function:

if (is_countable($a)) {
    echo count($a);
}