"php image upload security check list" Code Answer


Re-process the image using GD (or Imagick) and save the processed image. All others are just fun boring for hackers.

Edit: And as rr pointed out, use move_uploaded_file() for any upload.

Late Edit: By the way, you'd want to be very restrictive about your upload folder. Those places are one of the dark corners where many exploits happen. This is valid for any type of upload and any programming language/server. Check https://www.owasp.org/index.php/Unrestricted_File_Upload

By Vincent Stimper on December 12 2022

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