Re: GD Question

Craig Hoffman <choffman@xxxxxxxxxx> · Tue, 5 Apr 2005 14:10:50 -0500

Hi Wendell,

If its not too much trouble, I have one more question.  How can I get 
GD to give me the correct image name and pass a variable to another 
page.  So the image corresponds with the correct title in the DB.  Does 
that make sense?

Thanks again.
Craig
On Apr 5, 2005, at 1:41 PM, Wendell Frohwein wrote:

So, your index.php page is the one with the image in it. How are you
calling the image? When I do something similar, In my index.php page I
would of course have the html code:

<img src="doimage.php" height="20" width="100" border="0">

My doimage.php is the actual code to retrieve / create the thumbnail 
for

you. If you were trying to have the code that creates the thumbnail in

your index.php, this explains why you were getting binary information 
in

your code.

I hope that helps.

PS

You might want to try creating thumbnails when you initially upload 
your

image. This saves on cpu power.
Yes I know.  Thanks.

-Wendell

-----Original Message-----
From: Craig Hoffman [mailto:choffman@xxxxxxxxxx]
Sent: Tuesday, April 05, 2005 11:04 AM
To: php-db@xxxxxxxxxxxxx
Subject:  GD Question

Hello Everyone,
I wrote a GD function that resizes some images and displays them as
thumbnails. When I put the function in the index.php page I receive an
error Warning: Headers have already been sent... then it shows a bunch
of binary.  I do not want re-save the file, I just want resize and show
it.  What am I doing wrong here?  Any help would be great.
- Craig

				//query the DB for image name
					Some query...
				//Photo varibale
					$route_photo =
$row["route_photo"];

				//Start GD
				//New Image resize
					$new_width = 125;
					$new_height = 225;

				//Content Type
					header("Content-type:
image/jpeg");

				//Start new image resize	
					list($width_orig, $height_orig)
=
getImageSize("./images/climbs/$route_photo");

					if ($new_width && ($width_orig <
$height_orig)) {
							$new_width =
($new_height / $height_orig) * $width_orig;
						} else {
							$new_height =
($new_width / $width_orig) * $height_orig;
							}

				//resample the image
					$thumb =
ImageCreateTrueColor($new_width, $new_height);
					$tmp_image =
ImageCreateFromJPEG("./images/climbs/$route_photo");
					ImageCopyResampled($thumb,
$tmp_image, 0, 0, 0, 0, $new_width,
$new_height, $width_orig, $height_orig);

					ImageJPEG($thumb,'','100');
					ImageDestroy($thumb);

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