Hi,
I added image confirmation to a guestbook and even though it works
greate for most people, some people have problem and I can't seem to
figure out why this happens. Note that I'm not talking about the same
guestbook on one server but the guestbook is on people's own hosting server.
The php code to create the image can't be simpler:
*confirm_image.php:*
$datekey = date("F j");
$rcode = hexdec(md5($_SERVER[HTTP_USER_AGENT] . $cfg_sitekey .
$random_num . $datekey));
$code = substr($rcode, 2, 6);
$image = ImageCreateFromJPEG("images/code_bg.jpg");
$text_color = ImageColorAllocate($image, 80, 80, 80);
Header("Content-type: image/jpeg");
ImageString ($image, 5, 12, 2, $code, $text_color);
ImageJPEG($image, '', 75);
ImageDestroy($image);
Most people get a nice image but some people get only, what appears to
be, garbage:
ÿØÿàJFIFÿþ;CREATOR: gd-jpeg v1.0 (using IJG JPEG v62),
quality = 75 ÿÛC $.'
",# (7),01444 '9=82<.342ÿÛC
2! !22222222222222222222222222222222222222222222222222ÿÀ
...snip...
For the complete output have a look here:
http://www.samuel-area.de/phpbook/confirm_image.php
Do you know what is going wrong here?
Yours,
Age
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