Execute Matlab Function by PHP

I am trying to execute a simple matlab function with input and output but it returns, even I only check the version of matlab

string '' (length=0)
array (size=0)
empty
int 1

my php code(check version)

$command = 'matlab -version';
$res = exec($command, $output, $return);
var_dump($res, $output, $return);

my php code(real work)

$command = "matlab -nojvm -nodesktop -nodisplay -r test (1,2,3)";
$res = exec($command, $output, $return);
var_dump($res, $output, $return);

Matlab code

function x = test(n1,n2,n3)
  x = n1+n2+n3;
end

Answer 1

[Walter Roberson]

$command = "matlab -nojvm -nodesktop -nodisplay -r 'test(1,2,3)'";

[Tsz Hei Yeung]

It doesn't work too

Do I need to setup a matlab server, besides the wamp server?