CodeIgniter/PHP/GD2 Image Manipulation is playing up

Question

Hi folks

I have a website going that takes a user's uploaded image, and makes three copies - a 'full' copy to print with (downsized to 1500x1125), a 'web' copy to display online (not coded yet), and finally a thumbnail.

So here's the code - _imageformat() is passed the parameters (which I've confirmed to be correct) from CI's Upload Class:

function _imageformat($fullpath, $shortpath, $width, $height)

{ // We now format the image.

// First, we check if it is landscape or portrait if ($width >= $height) // It's landscape (or square) { // Now create the full printing image $fullimage = $this->_resize('l', $fullpath, $shortpath, $width, $height); } else // It's portrait { // Now create the full printing image $fullimage = $this->_resize('p', $fullpath, $shortpath, $width, $height); }

}

function _resize($type, $fullpath, $shortpath, $width, $height) { // Set up the default Image Manipulation config options $config['image_library'] = 'gd2'; $config['source_image'] = $fullpath; $config['maintain_ratio'] = TRUE;

// Shave the '.jpg' from the end to append some nice suffixes we'll use
$newimage = substr($fullpath, 0, -4).'_full'.".jpg";

$config['new_image'] = $newimage;

if ($type == 'l') // If it's landscape
{
 $config['width'] = 1500;
 $config['height'] = 1125;
}
else if ($type == 'p') // If it's portrait
{
 $config['width'] = 1125;
 $config['height'] = 1500;   
}

// Load the image library with the specified parameters, and resize the image!  
$this->load->library('image_lib', $config); 
$this->image_lib->resize();

// Create a thumbnail from the full image
$config['source_image']  = $newimage;
$config['new_image']  = substr($fullpath, 0, -9)."_thumb".".jpg";
$config['maintain_ratio']  = TRUE;
$config['width']    = 150;
$config['height']   = 150;

$this->load->library('image_lib', $config); 

$this->image_lib->resize();

return $newimage;

}

What SHOULD happen: In my uploads folder, there are three images - the original uploaded file (we'll call it image.jpg), the resized file (named image_full.jpg), and the thumbnail (named image_thumb.jpg).

What DOES happen: In my uploads folder, there are only TWO images - the original uploaded file (image.jpg), and the resized file (image_full.jpg). No thumbnail is ever created.

What's interesting, however, ** is that if I place the code for the Thumbnail creation first, it generates the thumbnail image but **NOT the _full (resized) image.

So it appears to me that it won't ever run $this->image_lib->resize() twice. Why not? Is it some amateur mistake I'm making, or have I missed something obvious?! :P

Thanks!

Jack

Edit: I should point out that yes, I know I'm loading the image_lib library twice. I fathomed this was the only way of passing new parameters to it. I also tried, after resizing the full image, calling $this->_thumbnail() which loaded the library again there. But still the same issue occurred.

Edit 2: I've also tried using $this->image_lib->clear() - still no luck.

Answer 1

You should load the library only once and initialize it with different configs:

$this->load->library('image_lib');

// full image stuff
$this->image_lib->initialize($config);
$this->image_lib->resize();

// thumbnail stuff
$this->image_lib->initialize($config);
$this->image_lib->resize();