Matlab function executed by php(find the output)

I had try system(),exec(),shell_exec(),passthru(), but there are no output echo. just display 0 or Array

Matlab m-file

function output = test(a,b)
output=a+b;
end

php

<?php if($_POST["submit"]=="add"){ 
            $one= $_POST["item"];
            $two= $_POST["item2"];
            $n_one = (int)$one;
            $n_two = (int)$two;    
            $command = "E:\Matlab\bin\matlab -wait -nojvm -nodesktop -nodisplay -r \"test($n_one,$n_two);exit;\"";

           //system($command,$rt);
           //echo $rt;

           //exec("$command 2>&1",$output,$rt);
           //echo  $output.'or'.$rt;   

           //$out = shell_exec($command);
           //echo $out;

           //passthru($command,$return_var);
           //echo $return_var;

        }
  ?>

Answer 1

[Swathik Kurella Janardhan]

You can refer to the first two answers in this link that explains on the syntax to execute the command and retrieve the output.

You might be missing '&' when referring to $output, try the below commands as mentioned in the link above.

exec("$command 2>&1",&$output,&$rt);
echo $output[0]."\n";

[lu mengping]

When I added '&',had HTTP 500 error web->Fatal error: Call-time pass-by-reference has been removed If I need to modify my function?