Help GD CreateImageFromGif from a url is very very slow! Help?

vbman213

Ok it takes like 5 seconds to createagif from this http://itemdb-rs.runescape.com/2394_graphimg.gif?id=5350&scale=0 which is very odd because it isn't a complicated image, and it loads very quickly in my browser if I navigate directly to it... so why is it so slow?

I found a way to do the same thing, but by using fopen and actually downloading the file and then using imagecreatefromgif on the downloaded image, and that was much faster, but my image had lines running down it, and you couldn't even make it out...

so how do I solve my problem?

HalfaBee

Not sure why it is slow, but using fopen, you will need to specify "rb" as the mode.

vbman213

It loads a lot quicker using fopen.. but the image is distorted...

$input = fopen("http://itemdb-rs.runescape.com/2394_graphimg.gif?id=5350&scale=1", "rb");

            # read the contents of the file
            # will accept files up to 10Mb, but will probably get
            # and EOF before that, we have to do it this way because
            # filesize isn't designed to work with URLs.  sigh.
            $image_data = fread($input, 100000000);

            fclose($input);

            # write the contents to a dummy file
            $output = fopen("test.gif", "wb");
            fwrite($output, $image_data);
            fclose($output);

This frustrates me to no end, that the image takes so long to create... when it instantly loads in my browser

HalfaBee

It is a packet issue.

this works, but still slow.

$handle = fopen("http://itemdb-rs.runescape.com/2394_graphimg.gif?id=5350&scale=1", "rb");
$image_data = stream_get_contents($handle);
fclose($handle);

You might want to try using curl to get the image, I think it might be an issue of the script looking for browser/referer info.

vbman213

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

$ch = curl_init();

	curl_setopt($ch, CURLOPT_URL, "http://itemdb-rs.runescape.com/2395_graphimg.gif?id=5350&scale=1");
	curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FRESH_CONNECT, 1);

$handle = curl_exec($ch);

$img = imagecreatefromstring($handle);

imagegif($img);

imagedestroy($img);

How about that?

http://zaxo.runesociety.com/zaxo/feeds/test.php

vbman213

Well I thought that worked... but it is still slow... I think it is because HTTP is returning a 304 (Not Modified), because with every other image, that returns a 200 response it works fine...