Problem with unlink all .png files

[fr600]

Hi guys, this is another problem I'm having with unlink. This is the error i get:

Warning: Invalid argument supplied for foreach() in d:\Server\Apache\htdocs\tracker\includes\delete.php on line 17

On line 17 and onwards, i got just this:

foreach (glob("*.png") as $filename) {
unlink("$tempimgpath/$filename");
}

in config.php, which is included in delete.php by the way
$tempimgpath = "d:/Server/Apache/htdocs/tracker/images/temp";
and I've also tried with directory, like
$_tempimagedir = "images/temp";

but everytime I get that error, any idea what I'm doing wrong?

[edcellgavin]

you're script lies in
d:\Server\Apache\htdocs\tracker\includes\ directory. unless u've change ur currently working directory, you're accessing that directory with the glob() call and perhaps there's no .png files there... thus, you did not pass a valid array input in your foreach() statement. try changing your working dir with chdir(newdir) or specify it in your glob(dir/pattern) call

[fr600]

It would be a lot more helpful if you can show with some code. I'm a beginner and I work by reading manuals and unfortunately, not enough docs are available about unlink. So if you can, please...

EDIT: it worked with chdir, thank you.

[Installer]

As you found out, the problem was not with "unlink", but with "glob()", as edcellgavin said. Here's a way to do it without changing directories, to avoid error messages, and to make sure you get all files regardless of case:

$tempimgpath = 'd:/Server/Apache/htdocs/tracker/images/temp';
$glob = glob("$tempimgpath/{*.png,*.PNG}", GLOB_BRACE);
if ($glob) {
    foreach ($glob as $filename) { 
        unlink("$tempimgpath/$filename");
    }
} else {
    echo 'No .jpg files found.';
}

[fr600]

Thank you more...