PHP arrays in a while - php

Question

I have problem with $res array.... i don't know with $res[0] is like a empty variable (array have a lot of dates but i don't know why and where is wrong... i tried with $res['ItemSlotX'] and now with $res[0]...
Edited: i have already changed my $res[0] and 1 but is same...
Thank you for help!
function smartsearch($whbin,$itemX,$itemY) {
if (substr($whbin,0,2)=='0x') $whbin=substr($whbin,2);
$items = str_repeat('0', 240);
$itemsm = str_repeat('1', 240);
$i = 0;
while ($i<240) {
$_item = substr($whbin,(64*$i), 64);
$type = (hexdec(substr($_item,18,2))/16);
$dbgetvalutslots = new DB_MSSQL;
$dbgetvalutslots->Database='DTRMUWAP';
$dbgetvalutslots->query("Select [ItemSlotX],[ItemSlotY] from ItemDetails where ItemIndex = '".hexdec(substr($_item,0,2))."' and ItemGroup = '".$type."'");
$ijj=0;
$res=array();
while ($dbgetvalutslots->next_record()) {
$temp = array(
'ItemSlotX' => $dbgetvalutslots->f('ItemSlotX'),
'ItemSlotY' => $dbgetvalutslots->f('ItemSlotY')
);
$res[$ijj]=$temp;
$ijj++;}
$y = 0;
while($y<$res[1]) {
$y++;
$x=0;
while($x<$res[0]) {
$items = substr_replace($items, '1', ($i+$x)+(($y-1)*8), 1);
$x++;
}
}
$i++;
}$y = 0;
while($y<$itemY) {
$y++;$x=0;
while($x<$itemX) {
$x++;
$spacerq[$x+(8*($y-1))] = true;
}
}
$walked = 0;
$i = 0;
while($i<120) {
if (isset($spacerq[$i])) {
$itemsm = substr_replace($itemsm, '0', $i-1, 1);
$last = $i;
$walked++;
}
if ($walked==count($spacerq)) $i=119;
$i++;}$useforlength = substr($itemsm,0,$last);
$findslotlikethis='^'.str_replace('++','+',str_replace('1','+[0-1]+', $useforlength));
$i=0;$nx=0;$ny=0;
while ($i<120) {
if ($nx==8) { $ny++; $nx=0; }
if ((eregi($findslotlikethis,substr($items, $i, strlen($useforlength)))) && ($itemX+$nx<9) && ($itemY+$ny<16))
return $i;
$i++;
$nx++;
}
return 1337;}

Answer 1

There seems to be a lack of context for the code in order to really understand it, but for what I can see here already, it should be:
Edit: some extra code to be more explicit
$y = 0;
$numberOfRecords = count($res);
while($recordN < $numberOfRecords)
while($y<$res[$recordN]["ItemSlotY"]) {
$y++;
$x=0;
while($x<$res[$recordN]["ItemSlotX"]) {
$items = substr_replace($items, '1', ($i+$x)+(($y-1)*8), 1);
$x++;
}
}
$i++;
$recordN++;
}
as $temp is an array and you're then doing $res[$ijj]=$temp;