histat count number

****code: 
$data = array();
$m = $visit_tongtruycap;

for($i=0; $i<strlen($visit_tongtruycap); $i++){
$t = $m%10;
$m = $m/10;
$data[] = $t;
}

for($j=strlen($visit_tongtruycap); $j>=0; $j--){
echo'<div class="hitstat-so">'.get_image($data[$j]).'</div>';
}

function get_image($x){
switch($x){
case 1:
$str="<img src=\"images/1.gif\">" ;
break;

case 2:
$str="<img src=\"images/2.gif\">" ;
break;

case 3:
$str="<img src=\"images/3.gif\">" ;
break;

case 4:
$str="<img src=\"images/4.gif\">" ;
break;

case 5:
$str="<img src=\"images/5.gif\">" ;
break;

case 6:
$str="<img src=\"images/6.gif\">" ;
break;

case 7:
$str="<img src=\"images/7.gif\">" ;
break;

case 8:
$str="<img src=\"images/8.gif\">" ;
break;

case 9:
$str="<img src=\"images/9.gif\">" ;
break;

default:
        $str="<img src=\"images/0.gif\">" ;
        break;
}

return $str;
}