Re: [PHP] Generate Thumbnail gif's
Is there any pre-written code available on the net to generate thumbnail images for a picture. I mean I send the path of the image and my PHP Script should be able to generate a gif file of size 100x71 or something like that. If your server has Imagemagick installed (it seems pretty common), try: `convert -size 100x71 old.gif new.gif`; That will scale your image into 100x71 pixels, and will maintain the aspect ratio. - michal migurski- contact info and pgp key: sf/cahttp://mike.teczno.com/contact.html -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Generate Thumbnail gif's
Vijaya_Manda wrote:
Is there any pre-written code available on the net to generate thumbnail
images for a picture.
I mean I send the path of the image and my PHP Script should be able to
generate a gif file of size 100x71 or something like that.
Images will look stretched if you do that, but here are two functions to
resize an image with a new width or height proportional to its current
size. Pass them GD image resources created with imagecreatefrompng() and
friends.
function imageresizeheight($img, $newheight) {
$oldheight = imagesy($img);
$oldwidth = imagesx($img);
$newwidth = $oldwidth * ($newheight / $oldheight);
$newimg = imagecreatetruecolor($newwidth, $newheight);
imagecopyresized($newimg, $img, 0, 0, 0, 0, $newwidth, $newheight,
$oldwidth, $oldheight);
return $newimg;
}
function imageresizewidth($img, $newwidth) {
$oldheight = imagesy($img);
$oldwidth = imagesx($img);
$newheight = $oldheight * ($newwidth / $oldwidth);
$newimg = imagecreatetruecolor($newwidth, $newheight);
imagecopyresized($newimg, $img, 0, 0, 0, 0, $newwidth, $newheight,
$oldwidth, $oldheight);
return $newimg;
}
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Re: [PHP] Generate Thumbnail gif's
Vijay Killu wrote: That will resize the image and display it as a thumbnail. No, they will give you a GD image resource to do what you want with. What I want is a new image to be created. I mean a .gif file. You can't create a GIF, but you can use imagepng() or imagejpeg() to output it to a file as a PNG or JPEG. -- The above message is encrypted with double rot13 encoding. Any unauthorized attempt to decrypt it will be prosecuted to the full extent of the law. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Generate Thumbnail gif's
* Thus wrote Leif K-Brooks ([EMAIL PROTECTED]):
Vijaya_Manda wrote:
Is there any pre-written code available on the net to generate thumbnail
images for a picture.
I mean I send the path of the image and my PHP Script should be able to
generate a gif file of size 100x71 or something like that.
Images will look stretched if you do that, but here are two functions to
resize an image with a new width or height proportional to its current
size. Pass them GD image resources created with imagecreatefrompng() and
friends.
you could center a proportinal image onto a 100x71 background
image.
if (width height) {
resize width to 100
resize height = height / (int) width/100
} else {
resize height to 71
resize width = width / (int) height/71
}
put resized image in center of 100x71 image.
Curt
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