note 75275 added to function.finfo-file

Tempting as it may seem to use finfo_file() to validate uploaded image files (Check whether a supposed imagefile really contains an image), the results cannot be trusted. It's not that hard to wrap harmful executable code in a file identified as a GIF for instance. A better & safer option is to check the result of: if (!$img = @imagecreatefromgif($uploadedfilename)) { trigger_error('Not a GIF image!',E_USER_WARNING); // do necessary stuff } ---- Server IP: 194.109.193.76 Probable Submitter: 88.211.177.163 ---- Manual Page -- http://www.php.net/manual/en/function.finfo-file.php Edit -- https://master.php.net/note/edit/75275 Del: integrated -- https://master.php.net/note/delete/75275/integrated Del: useless -- https://master.php.net/note/delete/75275/useless Del: bad code -- https://master.php.net/note/delete/75275/bad+code Del: spam -- https://master.php.net/note/delete/75275/spam Del: non-english -- https://master.php.net/note/delete/75275/non-english Del: in docs -- https://master.php.net/note/delete/75275/in+docs Del: other reasons-- https://master.php.net/note/delete/75275 Reject -- https://master.php.net/note/reject/75275 Search -- https://master.php.net/manage/user-notes.php