If your script passes user-supplied filenames directly to exec(), you are inviting shell injection attacks. Fix: Always sanitize with escapeshellarg() and use allow-lists for file extensions.
You have two paths. Which one is right for you? epaper php script
Unlike print, digital allows dynamic ads. Your PHP script can overlay inline ads between page renderings. For example, after page 5, insert a div from Google Ad Manager. The script modifies the JSON output before sending it to the browser. If your script passes user-supplied filenames directly to
Developers often make these mistakes when deploying ePaper PHP scripts: after page 5