fungsi checkbox

um mau tanya ini convertnya ke mysqli gimana ya

 function GetCheckboxes($table, $key, $Label, $Nilai='') {
  $s = "select * from $table order by nama_tag";
  $r = mysql_query($s);
  $_arrNilai = explode(',', $Nilai);
  $str = '';
  while ($w = mysql_fetch_array($r)) {
    $_ck = (array_search($w[$key], $_arrNilai) === false)? '' : 'checked';
    $str .= "<input type=checkbox  name='".$key."[]' value='$w[$key]' $_ck>$w[$Label]   ";
  }
  return $str;

saya coba pake ini nggak bisa, tolong bantuannya um

 function GetCheckboxes($table, $key, $Label, $Nilai='') {
  $s = "select * from $table order by nama_tag";
  $r = mysqli_query($connect, $s);
  $_arrNilai = explode(',', $Nilai);
  $str = '';
  while ($w = mysqli_fetch_array($r)) {
    $_ck = (array_search($w[$key], $_arrNilai) === false)? '' : 'checked';
    $str .= "<input type=checkbox  name='".$key."[]' value='$w[$key]' $_ck>$w[$Label]   ";
  }
  return $str;