thumbnail creation without save? in Webmasters and Developers

Re: thumbnail creation without save?

Mon, 07 Apr 2003 23:15:03 EDT

Leif3 : I'll try it out and let you know. Many thanks. PHP continues to amaze me.

Re: thumbnail creation without save?

Mon, 07 Apr 2003 21:57:14 EDT

Roundboy : certianly..

I call the image like:

IMG SRC="/makeimage.php?file=$file">

this means call the makeimage.php file with arguments that the php code needs:

makeimage.php :

code:


// set base image
$image = "/home/ercdvs/public_html/archive/$id/$file";
$image_info = getimagesize($image);
// image specifics
$too_big_diff_ratio = $image_info[0]/$max_width;
$new_img_width = $max_width;
$new_img_height = round($image_info[1]/$too_big_diff_ratio);

// determine image type
if($image_info[2] == "2") // JPEG
	{
// This is for resizing JPG only
	Header ("Content-type: image/jpeg");
	$src_img = @imagecreatefromjpeg($image);
	$dst_img = @imagecreatetruecolor($new_img_width,$new_img_height);
	imagecopyresampled($dst_img, $src_img, 0, 0, 0, 0, $new_img_width, $new_img_height, $image_info[0], $image_info[1]);
    imagejpeg($dst_img,'',90); 
	ImageDestroy($src_img); 
	ImageDestroy($dst_img); 

	}

This code takes the directory and filename of the big image.. and if it is a jpg, resizes to a max width of 100, and a hieght keeping with the image ratio

I need to write vrey similar code for gif, png, etc.. but 99.9% of m images are jpg.

feel free to copy and ask me any questions.
--

Girls are like internet domain names, the ones I like are already taken. Unless you get one from a strange country

I dont know the difference between games and reality anymore ... I just used a shotgun on my mother and she's not respawning

Re: thumbnail creation without save?

Mon, 07 Apr 2003 21:32:15 EDT

Leif3 : Could you post a sample of some code.
Thanks.

Re: thumbnail creation without save?

Mon, 07 Apr 2003 20:29:43 EDT

Roundboy : i actually got it working..

I have the proper workings of the functions.. it ust wasn't displaying..

but it turns out i had an error in the php age i was calling.. resulting in no image..

everything is working on the fly now.. no thumbnails saved

Re: thumbnail creation without save?

Mon, 07 Apr 2003 20:11:07 EDT

Lazarus Long : Look at some of the image functions in PHP.

I use the following the ImageCopyResized and ImageJpeg functions to create thumbnails on the fly

Hope this helps
--
Always listen to experts. They'll tell you what can't be done, and why. Then do it.

thumbnail creation without save?

Mon, 07 Apr 2003 17:59:29 EDT

Roundboy : i have the code in place to create a tumbnail via php from an image..

but i want to create and DISPLAY it only the fly.. not save it to a directory..

i know that i can call:

img src = "myscript.php?arguments"

but i can't pass the filename, etc of the image i want to create the thumbnail from..

if i call the function directly in the img scr.. then the page is ONLY the thumbnail.. not contained in an image..

any insights on how to make a thumbnail for display on a page without saving it to a directory??
--

Girls are like internet domain names, the ones I like are already taken. Unless you get one from a strange country

I dont know the difference between games and reality anymore ... I just used a shotgun on my mother and she's not respawning