http://www.fastgraph.com/help/image_file_header_formats.html
http://semmix.pl/color/exgraf/eeg12.htm
Gordon Stewart <[EMAIL PROTECTED]> wrote:
Im designing a secure section of my site :-
(passworded...) (not https - but just passworded)
Im planning on adding a file-upload script, & have found this on the net...
http://www.phpfreaks.com/tutorials/36/0.php
My main query - Is to how do I test to see if the file is actually a
JPG / GIF / BMP
(not just by the file-extension...) - by actually 'analysing' the file
& see if its a picture...
if ($_FILES['imagefile']['type'] == "image/gif")
Do I just add bmp / jpg to the above lines - EG :-
$test=0;
if ($_FILES['imagefile']['type'] == "image/gif"){$test=1;}
if ($_FILES['imagefile']['type'] == "image/jpg"){$test=1;}
if ($_FILES['imagefile']['type'] == "image/bmp"){$test=1;}
if ($test==1){
do stuff .....
}
is that correct ??? - I want allow Only those types of pics... - Does
the above actually test to see if its an image - or can someone
by-pass it by renaming an executable to programme.jpg
--
G
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