Re: Show image img src=img.php?img=1.jpg help


Jerry Stuckle wrote:
b007uk@xxxxxxxxx wrote:
Jerry Stuckle wrote:

b007uk@xxxxxxxxx wrote:

RainCT wrote:


Can you copy all the code?


Sure, here it is:

<?php
session_start();
$dir = session_id();

if ($_REQUEST['img'])
{
$showfile = "./temp/$dir/".$_REQUEST['img'];

if (file_exists($showfile))
{
header("content-type: image/jpeg");
header('Content-Length: ' . filesize($showfile));
header("Content-Disposition: inline; filename=$showfile");
readfile($showfile);
}
}
echo "<img src='?img=1.jpg'>";
?>

If i keep session_start() "Save picture as" detects image as
untitled.bmp, if i delete
session_start() - everythng is fine, it is detected as jpeg, but i need
session_id(), so i have to start session...
And, i read somewhere in this group that i should add ini_set, like
this:

<?php
ini_set('session.use_cookies', '0');
ini_set('session.cache_limiter', '');
ini_set('session.cache_expires', '');
session_start();
$dir = session_id();
....

When i do that the image type is detected correctly as jpeg, but the
file name is not, its named as the script, showimg.jpg,
filename=$showfile" is not working for some reason. But i guess its
good enough, it would be nice to detect the file name as well though


But earlier you said this really is a bmp, not a jpg.

Just changing the name or header is not going to change the real file type. It
will still be a bmp. If you want to change it to a jpg, you need to convert it
first.


Yes, i understand that. The picture is jpeg (echo "<img
src='?img=1.jpg'>";), but "save picture as" only offered to save it as
bmp, not jpeg, that was my problem/question.


OK, I misread your original post. I understand now.

I haven't actually tried mixing session_start() with header(); normally if I'm
using header() I don't need session_start().

Since both must be sent before anything else is output, I suspect there's a
conflict between the two. However, what should work is to use an img tag in
this file, pointing at a file containing your PHP code. In this file send your
session_start(); in the other file only send the header and image.

This works because the img tag causes another request to the server, which
requires another header.

Thank you very much!
It sounds like a great idea, i don't fully understand how its going to
work, but ill figure it out.
My main concern is to be able to hide the actual path to the image file
($showfile = "./temp/$dir/".$_REQUEST['img'];) so it would not be
anywhere in the html, and to make sure the file can only be downloaded
once, by the person with the correct session id

.

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