Asked such a question to me how to display the value of a variable like this.

$m = 10; $k = 'm';

We need to get the value of the variable m through k, how can this be done?

    1 answer 1

    This is how PHP can be:

     echo $$k;

    That is, if by a simple, first $k is taken - the result is m , we use the prefix $ , we get $m .

    And you can do this:

     $foo = 'count'; echo $foo([1, 1, 1]); //выводит 3

    Those. the result is a call to the count function. With constructions empty , isset , if else , etc. - it's not gonna go.