belki çok saçma oldu ama iş çözüldü

<?php
header('Content-type: application/json');

$deger1=12;  // buraya db den gelen veri olacak
$deger2=11;
$deger3=10;
$deger4=19;
$deger5=8;
?>
{  
          "cols": [  
                {"id":"","label":"Topping","pattern":"","type":"string"},  
                {"id":"","label":"Slices","pattern":"","type":"number"}  
              ],  
          "rows": [  
                {"c":[{"v":"Mushrooms","f":null},{"v":<? echo $deger1 ?>,"f":null}]},  
                {"c":[{"v":"Onions","f":null},{"v":<? echo $deger2 ?>,"f":null}]},  
                {"c":[{"v":"Olives","f":null},{"v":<? echo $deger3 ?>,"f":null}]},  
                {"c":[{"v":"Zucchini","f":null},{"v":<? echo $deger4 ?>,"f":null}]},  
                {"c":[{"v":"Pepperoni","f":null},{"v":<? echo $deger5 ?>,"f":null}]}  
              ]  
        }