I'm making a Facebook application that can generate images to user's albums. To publish a story a thumbnail of this image is stored on my server. Since this server currently is very limited I want to be able to clean these thumbnails pretty often.
To not get broken links in older facebook stories the address to the thumbnail is a php script that checks if the thumbnail is available and returns it, or otherwise returns a default thumbnail.
I have solved this using the following script:
Code: Select all
$tImage = $_GET['i'];
$tURL = "upload/$tImage.jpg";
if(!($fp=fopen($tURL,"rb"))){
header("Location: thumb.jpg");
}else{
header("Location: upload/$tImage.jpg");
fclose($fp);
}Thanks,
/Karl