note 105033 added to function.getimagesize

Here is the function which determines whether the PNG image contains alpha or not: function is_alpha_png($fn){ return (ord(@file_get_contents($fn, NULL, NULL, 25, 1)) == 6); } The color type of PNG image is stored at byte offset 25. Possible values of that 25'th byte is: * 0 - greyscale * 2 - RGB * 3 - RGB with palette * 4 - greyscale + alpha * 6 - RGB + alpha ---- Server IP: 69.147.83.197 Probable Submitter: 91.200.180.180 ---- Manual Page -- http://www.php.net/manual/en/function.getimagesize.php Edit -- https://master.php.net/note/edit/105033 Del: integrated -- https://master.php.net/note/delete/105033/integrated Del: useless -- https://master.php.net/note/delete/105033/useless Del: bad code -- https://master.php.net/note/delete/105033/bad+code Del: spam -- https://master.php.net/note/delete/105033/spam Del: non-english -- https://master.php.net/note/delete/105033/non-english Del: in docs -- https://master.php.net/note/delete/105033/in+docs Del: other reasons-- https://master.php.net/note/delete/105033 Reject -- https://master.php.net/note/reject/105033 Search -- https://master.php.net/manage/user-notes.php