I've got a function set up that decrypt AES encrypted images into its original files. For making a long story short, you would call it like this: DecryptFile($pathtofile)
This would create a file on folder tmp/ with the decrypted image and will return the path, for beeing able to insert the image via <img src="path">. I just need to show it on the current execution of the script, and delete it as soon as posible.
What I tried to do is unlink("path") for deleting the file at the end of the script, but if I do this there isn't enough time for the browser to load up the image, and anything will show up.
I checked out if I could manage with the tmpfile() function, but it seems that is suited for temporary download handling, as I can't think about a way of showing any image with <img> using this function.
Any ideas out there guys?
One possible solution would be to store the image data directly in the tag with a data URI. But then if someone were to copy down the source code they would essentially have the image, likewise if something was caching your page content... The again I suppose thats no different that "Save image as" or doing a full page download. But it would save you from having to mess with copy/mv/symlink/unlink.
<?php
$decrypted = DecryptFile($pathtofile);
$data = base64_encode(file_get_contents($decrypted));
$info = getimagesize($decrypted);
$image = sprintf('data:%s;base64,%s', $info['mime'], $data);
?>
<img src="<?php echo $image; ?>" />