PHP: Variable in a function name

Question

I want to trigger a function based on a variable.

function sound_dog() { return \'woof\'; }
function sound_cow() { return \'moo\'; }

$animal = \'cow\';
print soun         


        

Answer 1

For PHP >= 7 you can use this way:

function sound_dog() { return 'woof'; }
function sound_cow() { return 'moo'; }

$animal = 'cow';
print ('sound_' . $animal)();