Vairable Question

I don't understand why you're doing it this way if they are copies of the same image in different directories. Since they're DIFFERENT, the filename can be the same in both and you don't need to mess with that.

$image = 'some-image.png';

unlink('/path/to/regular/images/' . $image);
unlink('/path/to/cached/images/' . $image);

But to answer your question, can't you just use image functions to get the width/height of the image before you delete it?

PHP Code:

foreach ($path_post as $path) {
  $file_name = FCPATH . '/image/' . $path;

  //check to make sure image exists
  if (file_exists($file_name))
  {
    //get height/width of image
    list($height, $width) = getimagesize($file_name);

    //build the cached image file name
    $extension = pathinfo($path, PATHINFO_EXTENSION);
    $cached_image = FCPATH . 'image/cache/' . utf8_substr($path, 0, utf8_strrpos($path, '.')) . '-' . $width . 'x' . $height . '.' . $extension;

    //delete cached image
    unlink($cached_image);

    //delete regular image
    unlink($file_name);
  }    
} 


I will look more into it. Thanks for pointing it out. All ways happy to learn.

There's only one rule - please don't tell anyone to go and read the manual.  Sometimes the manual just SUCKS!