infinite loop on server.

<?php
session_start();
$con = mysqli_connect('xx.xx.x.x', 'xx', 'xx', 'xx') or die();
$items     = explode(',', $_SESSION['item']);
$all_items = "";
foreach ($items as $item) {
    if ($all_items == "") {
        $all_items = "'" . $item . "'";
    } else {
        $all_items .= ",'" . $item . "'";
    }
}
$query5 = "select distinct store_id,rate,iso from products where iso in (" . $all_items . ")";
$rslt5  = mysqli_query($con, $query5);
while ($row5 = mysqli_fetch_assoc($rslt5)) {
    $all5[] = $row5;
}
asort($all5);
$all6   = array_values($all5);
$counts = count($all6); //echo 'count is '.$counts.'<br/>';
$k      = 0;
for ($j = 0; $j < $counts;) {
    $one       = $all6[$k]['store_id'];
    $one_count = 0;
    $one_sum   = 0;
    for ($i = 0; $i < $counts; $i++) {
        if ($all6[$i]['store_id'] == $one) {
            $one_count++;
            $one_sum = $one_sum + $all6[$i]['rate'];
        }
    }
    $j = $j + $one_count;
    echo 'store id' . $all6[$k]['store_id'];
    $k = $counts - $one_count + 1;
    echo '   items=' . $one_count . " & sum=" . $one_sum . '<hr/>';
}
echo '<pre>';
print_r($all6);
echo '</pre>';
?>