Interesting problem

[sneaker]

Okay I have a directory named thumbs, and in it is are thumbnails for my products. I have named them like so (using product id 9 as example) 9_1.jpg, 9_2.jpg, 9_3.jpg, and so on. Now I need to find out how to count how many thumbnails are for the product are in this directory. I tried using this code:
$id = $GET['id'];
$count = 0;
$this_regexp = "/\b$id\b/i";
$this_dir = dir('previews/thumbs/');
if ($this_regexp != null) {
while ($file = $this_dir->read()) {
if (preg_match($this_regexp, $file)) {
$count++;
}
}
}

But the problem is it matches and counts all images for say item 19_1.jpg, 29_1.jpg, and so on because 9_ is matched. Please help, I know it is in my $this_regexp statement but can't figure it out.

[lobobr]

You need to specify that the $id is the beginning of what you're trying to match, so instead of:

$this_regexp = "/\b$id_\b/i";

use this:

$this_regexp = "/^$id_/i"; // I didn't understood why you used \b

The ^ character means "start of subject or line in multiline mode".

For more info take a look at:

http://www.php.net/manual/en/pcre.pattern.syntax.php

Best regards,