I would like tips for a secure upload of images with php. Many users will have access, what security tips would you give?
On the internet, I found the following tips:
1st - Validate file size (bytes);
2nd - Validate width;
3rd - Validate height;
4º - Validate extension;
5º - Validate Mime Type;
6º - Remove the points, before the extension (or code the name with MD5);
7º - Validate the binary file of the image ... ex: PNG = ‰ PNG
Is there anything else I can do to keep the upload safe?