print doesn't work

<script type='text/javascript'>
   function printDiv(divName) {
         var printContents = document.getElementById(divName).innerHTML;
         var originalContents = document.body.innerHTML;
         document.body.innerHTML = printContents;
         window.print();
         document.body.innerHTML = originalContents;
   }
</script>
 
<?php
   $result = dbquery("
   SELECT user_id as user_id, user_name, user_email, user_phone_mobile, user_phone_home, user_geo
   FROM ************_users // altered the correct name with *
   WHERE user_status = 0 ORDER BY user_name ASC"
   );

echo "<div id='printableArea'>";
   if (dbrows($result)) {
      while ($data = dbarray($result)) {

         if (!empty($data['user_geo'])) {
         $a = explode("|", $data['user_geo']); // it becomes array and it will break into 6 parts
         $street1 = $a[0];
         $street2 = $a[1];
         $country = $a[3];
         $region = $a[4];
         $city = $a[5];
         $zip = $a[6];
         $data['user_geo'] = "$street1, $street2, $city, $region, $country, $zip";
         }
   echo "<div class='list-group-item'>Navn: <strong> ".$data['user_name']."</strong><br/></div> ";
   echo "<div class='list-group-item'>Mail: <strong> ".$data['user_email']."</strong><br/></div> ";
   echo "<div class='list-group-item'>Mobil: <strong> ".$data['user_phone_mobile']."</strong><br/></div> ";
   echo "<div class='list-group-item'>Tlf.: <strong> ".$data['user_phone_home']."</strong><br/></div> ";
   echo "<div class='list-group-item'>Adresse: <strong> ".$data['user_geo']."</strong><br/></div> ";
   echo "<div class='list-group-item'><br/></div> ";
      }
   } else {
   echo "No data in table.";
}
echo "</div>";
echo "<input type='button' onclick='printDiv(\"printableArea\")' value='Udskriv side' />";
?>

<script type='text/javascript'>
 function printDiv(divName) {
 var printContents = document.getElementById(divName).innerHTML;
 var originalContents = document.body.innerHTML;
 document.body.innerHTML = printContents;
 window.print();
 document.body.innerHTML = originalContents;
 }
</script>