security of uploaded gif files

From: Date: Sun, 22 Jan 2006 05:03:15 +0000
Subject: security of uploaded gif files
Groups: php.general 
Request: Send a blank email to php-general+get-229020@lists.php.net to get a copy of this message
what is the best way to prevent malicious code from being uploaded via a .gif file? A friend showed me how php could be embedded within the .gif file. Does this problem also exist for .jpeg's? thanks, jon

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