# program:
const 1;
const 10;
add;
const 100;
mul;
const '(1+10)*100 equals ';
concat;
echo;
const 'this is the return value then';
return;

# execute:
echo: (1+10)*100 equals 
execution result = "this is the return value then"

#phpgenerator (vm to php)
$R = array();
$R[0] = 1;
$R[1] = 10;
$R[2] = $R[1] + $R[0];
$R[3] = 100;
$R[4] = $R[3] * $R[2];
$R[5] = '(1+10)*100 equals ';
$R[6] = $R[5] . $R[4];
echo $R[6];
$R[7] = 'this is the return value then';
return $R[7];


eval: (1+10)*100 equals 1100