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

You can do that, but not without interpolating the string first:

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

Or, skip the temporary variable with call_user_func():

call_user_func('sound_' . $animal);