[SOLVED] Header Problem

[DeanWhitehouse]

The image “http://spearbang.awardspace.com/avatar.php” cannot be displayed, because it contains errors.

 

From this code

 

<?php
header("content-type: image/gif");

$avatars = array(
"http://www.avatarist.com/avatars/Games/Sonic-The-Hedgehog/Sonic-animated.gif",
"http://www.avatarist.com/avatars/Games/Sonic-The-Hedgehog/Tails-salutes.gif",
"http://www.avatarist.com/avatars/Games/Sonic-The-Hedgehog/Sonic-and-Shadow-transform.gif",
"http://www.avatarist.com/avatars/Games/Sonic-The-Hedgehog/Knuckles2.gif");
echo $avatars[rand(0,3)];

?>

 

I think i am missing one or two headers in here?

[corbin]

I think you're missing the entire concept....

 

 

Your script is basically returning:

 

 

HTTP/1.1 200 OK

Content-Type: image/gif

 

<some url>

 

 

Would you really except a browser to display that?  A url is not image/gif; it's text.

 

 

 

You must read the data out of the files.

 

 

Eg:

 

 

header("Content-Type: image/gif");

readfile("someimage.gif");

[DeanWhitehouse]

Ahh, thanks, i have only used headers like this once using image gd, never with reading from files like so.

[premiso]

You would need to www.php.net/readfile  on the url and echo that out to the site.

 

Here is an example from the php site:

 

<?php
$avatars = array(
"http://www.avatarist.com/avatars/Games/Sonic-The-Hedgehog/Sonic-animated.gif",
"http://www.avatarist.com/avatars/Games/Sonic-The-Hedgehog/Tails-salutes.gif",
"http://www.avatarist.com/avatars/Games/Sonic-The-Hedgehog/Sonic-and-Shadow-transform.gif",
"http://www.avatarist.com/avatars/Games/Sonic-The-Hedgehog/Knuckles2.gif");
$file = $avatars[rand(0,3)];

if (file_exists($file)) {
    header('Content-Description: File Transfer');
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename='.basename($file));
    header('Content-Transfer-Encoding: binary');
    header('Expires: 0');
    header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
    header('Pragma: public');
    header('Content-Length: ' . filesize($file));
    ob_clean();
    flush();
    readfile($file);
    exit;
}
?>

 

That should work.

[DeanWhitehouse]

My code is just

<?php
header("content-type: image/gif");

$avatars = array(
"http://www.avatarist.com/avatars/Games/Sonic-The-Hedgehog/Sonic-animated.gif",
"http://www.avatarist.com/avatars/Games/Sonic-The-Hedgehog/Tails-salutes.gif",
"http://www.avatarist.com/avatars/Games/Sonic-The-Hedgehog/Sonic-and-Shadow-transform.gif",
"http://www.avatarist.com/avatars/Games/Sonic-The-Hedgehog/Knuckles2.gif");
echo readfile($avatars[rand(0,3)]);

?>

Just an extra question without wasting forum space, i need the site to use .htaccess to make the site address

http://spearbang.awardspace.com/avatar.gif

instead of it being

http://spearbang.awardspace.com/avatar.php

How can i do this?

 

Will this do

RewriteEngine On
RewriteBase /
RewriteRule  ^avatar.gif avatar.php [NC,L]

[premiso]

mod_rewrite would allow for it, but if you do that I would make sure that you add a folder such as:

 

http://site.com/avatars/imageava.gif

 

Then you just parse the part after the avatars folder and use that for your random image.

 

If you do it without doing that all images would be suspect unless you just make it look for the avatars.gif.

 

Either way it would be using mod_rewrite, it has been a while since I used it but I am sure there are a bunch of examples of mod_rewrite online. Hope that helps.

[corbin]

Alias avatar.gif avatar.php

 

Or,

RewriteEngine On

RewriteRule avatar\.gif avatar.php

 

 

 

By the way, if the avatars are local, you should be using the file path, not URI.

 

 

If the file path is not local, why not either download it and save some bandwidth, or just send redirect headers?

 

 

 

[DeanWhitehouse]

Solved, and yes i am planning on downloading them just wanted to get the code working.