A PHP File That Loads Avatar Images

[Trenaldi]

Hey guys,

I know very little about PHP, but here's what I was wondering was possible and how.

Could one make a php file which you could use to load users forum avatars on external pages? Something I could keep in the root with my forum and then reference in say an image tag on an external page that would grab someone's avatar. As an example:

Code Select Expand

<img src="http://www.forumdomain.com/forums/Avatar.php?42"/>
And have that URL function as an image both when used in a page or when directly navigated to. Specifically, the avatar of member number 42 in that example where the "?42" is what's appended to the URL.

Thanks in advance.

[Kindred]

load SSI.php

check the $user_info or the $context arrays...

[JBlaze]

load SSI.php

check the $user_info or the $context arrays...

That would only return the avatar URL. You would then need to use GD functions to turn the URL into an image resource, find out what format the image is in (jpg, png, gif, etc), and then return a Content-type: image/{format} header and then create the image. It's much more complicated than just grabbing $user_info['avatar']['link']...

[margarett]

Especially because $user_info returns the info about the current logged user, which is not what I understand from the OP.

[Trenaldi]

Being a bit of a raging idiot, would something like this work?:

Code Select Expand

<?php
include_once("http://www.forumdomain.com/forums/SSI.php");
$img = '$context['user']['avatar']['image']';
string image_type_to_extension ( int $imagetype [, bool $include_dot = FALSE ] );
header('Content-Type: image/$imagetype');
readfile($img);
?>

And I guess if ['user'] is a valid thing that the URL for a given avatar would be
www.forumdomain.com/forums/Avatar.php?user=42
I guess?

I mean, I know that this in particular does not work, but how badly have I missed the mark here? Are we talking "On the right track" or are we talking "I should stick my head in an oven."?

[margarett]

More or less on the right track

You need to include SSI.php then either call loadMemberContext (or is it Data?...) that will get you all user details, including avatar URL.
Or, if you don't want to have the overhead of getting a bunch of data you don't need, manually fetch the required data from members/attachments table

I'm just writing of the phone, I can check it better when I'm at the computer

[JBlaze]

Code Select Expand

<?php
require_once('SSI.php');

// get the required member info
$id_member = (int) $_GET['id'];
$member_data = ssi_fetchMember($id_member, 'return');

// find the image type
$image_type = exif_imagetype($member_data['avatar']);

// get the image format and make it a string so we can use it for our headers later
if ($image_type = IMAGETYPE_GIF)
{
    $image_format = 'gif';
}
else if ($image_type = IMAGETYPE_JPEG)
{
    $image_format = 'jpeg';
}
else if ($image_type == IMAGETYPE_PNG)
{
    $image_format = 'png';
}
else
{
    $image_format = null;
}

// create the correct image resource
switch ($image_type)
{
    case IMAGETYPE_GIF:
        $im = imagecreatefromgif($member_data['avatar']);
        break;
    case IMAGETYPE_JPEG:
        $im = imagecreatefromjpeg($member_data['avatar']);
        break;
    case IMAGETYPE_PNG:
        $im = imagecreatefrompng($member_data['avatar']);
    default:
        die('Image type not supported!');
}

// no image, no workie... error out
if (!$im)
{
    die('An error has occurred!');
}

// send our headers
header('Content-type: image/' . $image_format);

// send the image to the browser, then destroy it
image' . $image_format($im);
imagedestroy($im);


This is just what I came up with off the top of my head. You'd need to double check the avatar variable to see which one returns the path/url of the avatar image. Also, it could do with some better error handling.

Lastly, I have not tested this, so if it doesn't work, don't blame me.