The problem with image_lib

[eluser]codeDeveloper[/eluser]
Hi,

I use image_lib to create preview image.

Code:

$config['image_library'] = 'gd2';
$config['source_image'] = $fileName;
$config['maintain_ratio'] = TRUE;
$config['new_image'] = 'path';
$config['width'] = 640;
$config['height'] = 480;
$this->load->library('image_lib', $config);
$this->image_lib->resize();
$this->image_lib->clear();

If the image is less than 640 * 480, it stretches to 640 * 480, how fix this problem?


Unfortunately, the solutions are not found in the documentation.