HELP??file deletion and renaming problem

[doomed_toast]

hi everyone,
I'm having a very strange problem that has me stompt. I have a number of images named 1.jpg,2.jpg,3.jpg.... These images are images of articles in a store there corresponding title and description are stored in a database. Now i am working on a script to delete an image from the folder but then al the images that follow that images need to be renamed(eg. deleting 2.jpg allso mean i have to rename 3.jpg to 2.jpg and so on).So what i did was create a function that takes in the nr of the picture you want to delete then it does unlink(thatpicture) and then i have a for loop that renames all following images. I tested the deleting first and that worked,then i tested the renaming seperatly and that worked too but when i combined them something very strange happened during the renaming the deleted image magicly reappears and becomes 2.jpg again and another image in the row dissappears.I know there is nothing wrong with the for loop that does the renaming because that allso deletes and changes the idnr of the data in the in database and that works fine. I really don't get what's going on.
here is the function🙁$categorie just specifies in wich folder the image is and what table the data is in there is nothing wrong with that)

function del_items($categorie,$index)
{
echo "Bezig met artikel te verwijderen:$categorie,$index<br>";
$del_file = "./img/$categorie/$index.JPG";
echo "Deleting $del_file<br>";
//delete file
unlink($del_file);
//delete the date from the database
$delquery= "DELETE FROM '$categorie' WHERE autoID='$index'";
mysql_query("DELETE FROM $categorie WHERE autoID='$index'")
or die(mysql_error());

if(!file_exists("./img/$categorie/$index.JPG"))
echo "Deleted $del_file";
for($renin=($index+1);file_exists("./img/$categorie/$renin.JPG"); $renin++)
{
//rename images
$orig_path = "./img/$categorie/$renin.JPG";
$renamein = $renin-1;
$renamed_path = "./img/$categorie/$renamein.JPG";
rename($orig_path,$renamed_path);
echo "renamed $orig_path to $renamed_path<br>";
//update autoID's in database
$upquery= "UPDATE $categorie SET autoID=$renamein WHERE autoID=$renin";
mysql_query($upquery) or die (mysql_error());
}

[Installer]

Are you sure the files are being deleted? You say:

I have a number of images named 1.jpg,2.jpg,3.jpg...

Then in your code you have:

$del_file = "./img/$categorie/$index.JPG";

It looks like a possible case problem ("$index.JPG" not being the same as "$index.jpg").

Try some error-checking:

if (!unlink($del_file)) {
    echo $del_file . ' not deleted.';
}

[doomed_toast]

First of thanks for the reply it's not that a problem with JPG and jpg I use JPG as a standard to avoid these problems and i tested the unlinking seperatly before and it goes away out of the folder and just to be on the safe side i did your error-checking and it al works only by the time the renaming starts it suddenly becomes image nr 2 again it doesn't make any sense to me. Is there any difference between unlinking and actually delleting?