Comments on: How to check a file type efficiently in PHP? http://www.kadimi.com/en/file-type-265 Blog & Free Tech Support Mon, 16 Aug 2010 03:18:05 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Nabil http://www.kadimi.com/en/file-type-265/comment-page-1#comment-32 Nabil Sun, 09 Aug 2009 18:27:16 +0000 http://www.kadimi.com/en/?p=265#comment-32 Yes, using server software (specially antiviruses) will bring higher levels of security, but this is only available on dedicated servers. Yes, using server software (specially antiviruses) will bring higher levels of security, but this is only available on dedicated servers.

]]> By: Amine http://www.kadimi.com/en/file-type-265/comment-page-1#comment-31 Amine Sun, 09 Aug 2009 10:07:45 +0000 http://www.kadimi.com/en/?p=265#comment-31 I prefer the 'file' unix command because it relies on the header or signature of the file. I think a good soluion for security would be to nest several tests both client side and server side, beginning from the simple check of the file extension, and going through some test like the one you exposed for checking the actual type of the file, and ending with a server side antivirus testing if the type of the file has been accepted. I'm not a good php programmer but I think combining php functions and some other server scripting can lead to an acceptable solution. Thank you for the answer! I prefer the ‘file’ unix command because it relies on the header or signature of the file.

I think a good soluion for security would be to nest several tests both client side and server side, beginning from the simple check of the file extension, and going through some test like the one you exposed for checking the actual type of the file, and ending with a server side antivirus testing if the type of the file has been accepted. I’m not a good php programmer but I think combining php functions and some other server scripting can lead to an acceptable solution.

Thank you for the answer!

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