Thmbnail issue

NZ_Kiwis

I've got a code which has this <img src="thumbnail.php?id=4"> when i look it this file i get the red X

This is my code!!

$file = "http://www.site.com/travel/album/mid/";
$file2 = $row5[mid];
$filename = $file . $file2;


$percent = 0.5;

header('Content-type: image/jpeg');

// Get new sizes
list($width, $height) = getimagesize($filename);
$newwidth = $width * $percent;
$newheight = $height * $percent;

// Load
$thumb = @imagecreatetruecolor($newwidth, $newheight);
$source = @imagecreatefromjpeg($filename);

// Resize
@imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);

// Output
@imagejpeg($thumb);

what could be wrong?

brandtj

Hmm... perhaps take out the @ symbols and then comment out imagejpeg () and run your page again. Directly, though... not on the page with the image on it. Then it will give you a better idea of the error that's happening.

NZ_Kiwis

Done that, I don't get a error just the little red X which normaly shows when the images is not found.

brandtj

Perhaps throw a

header ('Content-type: text/plain');

in there, then it should be text output rather than image output.

NZ_Kiwis

brandtj wrote:
Perhaps throw a
header ('Content-type: text/plain');
in there, then it should be text output rather than image output.

Narr still not working, also why would it be a text output?? the filename is a large image i getting it resizing it and printing it as a smaller image!

brandtj

I was just thinking that maybe PHP was giving an error response, but the browser wouldn't display it because the document was an image. So if you added the Content-type header and commented out the imagejpeg () then maybe it would output something.

$file = "http://www.site.com/travel/album/mid/"; 
$file2 = $row5[mid]; 
$filename = $file . $file2;

Is "mid" a constant?

NZ_Kiwis

brandtj wrote:
I was just thinking that maybe PHP was giving an error response, but the browser wouldn't display it because the document was an image. So if you added the Content-type header and commented out the imagejpeg () then maybe it would output something.
$file = "http://www.site.com/travel/album/mid/"; 
$file2 = $row5[mid]; 
$filename = $file . $file2;
Is "mid" a constant?

Yeah mid is the folder name....

i've gone down this path as well, i've changed it to be

$filename = 'pic.jog';
and pic.jpg in the same folder as thumbnail.php :-)

is there something on the server which may not be installed or activated which could stop this?

brandtj

Odd. Are $width and $height the appropriate values?

As far as server problems are concerned, as long as you have GD it should work fine. O_o

Try echo'ing $width and $height and make sure they're not 0.

Installer

The script works perfectly for generating a thumbnail. Either you're not passing a valid image file ("pic.jog"?) or your server settings/installation are wrong.

brandtj

The pic.jog thing makes sense... and also I'm still curious about

$file2 = $row5[mid];

Is that a constant or a variable? If it is a variable, there's your problem right there.

NZ_Kiwis

brandtj wrote:
The pic.jog thing makes sense... and also I'm still curious about

Is that a constant or a variable? If it is a variable, there's your problem right there.

variable!

NZ_Kiwis

brandtj wrote:
Odd. Are $width and $height the appropriate values?

As far as server problems are concerned, as long as you have GD it should work fine. O_o

Try echo'ing $width and $height and make sure they're not 0.

yeah mate echo's fine
height = 10
width = 15

is there a way i can test gd??

brandtj

I would just try a simple GD script.

<?php
$image = imagecreatetruecolor (10, 10);
header ('Content-type: image/jpeg');
imagejpeg ($image);
imagedestroy ($image);
?>

brandtj

NZ_Kiwis wrote:
variable!

Did you add the "$"?

NZ_Kiwis

brandtj wrote:

I would just try a simple GD script.

<?php
$image = imagecreatetruecolor (10, 10);
header ('Content-type: image/jpeg');
imagejpeg ($image);
imagedestroy ($image);
?>

I get this!!

Fatal error: Call to undefined function: imagecreatetruecolor() in /home/rlnz/public_html/travel/zz.php on line 2

brandtj

What version of PHP? That function is relatively new so maybe you need to either update either PHP or the GD library.

Installer

It's strange you didn't get that message when you ran the thumbnail script directly and without the "@" symbols, as Jared suggested in his very first post.

Try "gd_info()".