title: Image file permission - image resizer
body: <p>PHP 
  mySQL</p>
  
  <p>Hi, i am having an interesting problem. 
  I have a form in my cms that allows the admin to upload images to the server. The script resizes the images to a thumbnail (170px height)and a large image(600px height). The thumbnails are around 16000k in size and the large images are around 160,000k in size. 
  I do not set file permissions and just let it happen automatically. 
  When i go to the site i can see the thumbnails but i can't see the full size images and i have tracked the problem down to the file permissions. The thumbnails have rw-r-r permissions and the larger images have rw-- -- -- permissions. Ie the public does not have permission to view the large images. I save the large images with the name of the original and i save the thumbnails with _thumbnail appended to the end.
  Why would the permissions of the large images be different when they are both uploaded and resized by the same script and when i do not set file permissions? Does the size have something to do with it? I only get this problem when uploading images to the production server, not when working on my local machine.
  Thanks
  Andrew</p>