Resizing an Image with PHP

Resizing an image in PHP is made possible by the GD library.  Most PHP configurations include the GD extension.

The following code should be a good guide:


$quality = 75;

$new_width = 600;

$new_height = 400;

$src = "image/original-image";

$dest = "image/resized-image.jpg";

$dest_resource = ImageCreateTrueColor($new_width,$new_height);

$src_resource = ImageCreateFromJpeg($src);

list($src_w, $src_h) = GetImageSize($src);

ImageCopyResampled($dest_resource, $src_resource, 0, 0, 0, 0, $new_width, $new_height, $src_w, $src_h);

imagejpeg($dest_resource, $dest, $quality);


Example that uses the above code:
Resize jpg online