This following bit of code will create a thumbnail of size $thumb_width x
$thumb_height based off of the initial file $file_location. Current GD
libraries don't work on GIFs, so that's not an option. You can use the
relative PNG functions in place of the jpeg functions, however.
// Create New Image
$full_img = imagecreatefromjpeg("$file_location");
$thumb_img = imagecreatetruecolor($thumb_width,$thumb_height);
imagecopyresized($thumb_img,$full_img,0,0,0,0,$thumb_width,$thumb_height,$wi
dth,$height);
imagedestroy($full_img);
imagejpeg($thumb_img,"$path_to_save\\$thumb_name");
imagedestroy($thumb_img);
print "<img src='$path_to_save\\$thumb_name'>";
// Might Need To Change Paths Pending How Script Is Called
The best thing to do, however, is to spend time reading all of the image
functions in the manual http://us2.php.net/manual/en/ref.image.php . There's
a lot in there and you can do some very impressive things with images if you
spend some time reading.
-M
-----Original Message-----
From: Tony Devlin [mailto:tdevlin@xxxxxxxxxxxxx]
Sent: Friday, November 19, 2004 9:41 AM
To: Php-Windows
Subject: GD Image Resizing on the fly.
Hello Everyone,
I am looking for a script or guidance in where to look to figure out how
to create a php script that resizes an image on the fly when it is called
with some variables. To further detail, I have a shopping cart I am
creating for a client -- the client has the ability to upload images,
instead of creating a very complex script when he uploads the file, I
figured on the shopping cart page I could grab the original file and then
resize it to display a thumbnail based on 2 variables being sent W,H (Width,
Height). The products are stored in a database along with the image path.
I need it to display in the middle of a page so a "header( 'Content-type:
image/jpeg' );" won't work for obvious reasons (header already sent). Also
it will have to distinquish between Gif and Jpeg (not a problem, just
preg-match the extension). I know the exact sizes that we want the shopping
cart images to be. Anyone have any ideas? If you need more information
just ask.
Thanks everyone -- this is such a great community!
Tony Devlin
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