resize of image not working in codeigniter 3 - resize

Question

I've been attempting to resize a image in codeigniter 3 ,but no luck! I have the resize inside the ddoo_upload() function , the resize() will work , when it comes to one image field within that form and if you will add two image field within that form , then the resize() will not work. Not sure what is wrong!
This is what i have tried for image upload,The code below shows my upload function (and resize within it)
if (isset($_FILES['destiimg']) && $_FILES['destiimg']['name'] != '') {
$filename = $this->ddoo_upload('destiimg', '2000' , '336');
} else {
$filename = NULL;
}
if (isset($_FILES['destiimg_thumb']) && $_FILES['destiimg_thumb']['name'] != '') {
$destbannerthumb_imgnew = $this->ddoo_upload('destiimg_thumb', 300 , 225);
} else {
$destbannerthumb_imgnew = NULL;
}
function ddoo_upload($filename, $width, $height)
{
$config['upload_path'] = './uploads/';
$config['allowed_types'] = 'jpg|jpeg|png|gif';
$config['overwrite'] = FALSE;
$config['encrypt_name'] = TRUE;
$this->load->library('upload', $config);
if ( ! $this->upload->do_upload($filename)) {
echo $this->upload->display_errors();die();
return NULL;
} else {
$data = $this->upload->data();
$filename = $data['file_name'];
$config1['image_library'] = 'gd2';
$config1['source_image'] = $this->upload->upload_path.$this->upload->file_name;
//$config1['create_thumb'] = TRUE;
$config1['maintain_ratio'] = FALSE;
$config1['width'] = $width;
$config1['height'] = $height;
$this->load->library('image_lib', $config1);
$this->image_lib->resize();
return $filename;
}
}
The upload works fine , but the resize has some issue.

Answer 1

You are missing some config options when loading image_lib.
Look at the manual, you didn't specified source_image (and other options).
If you want to use something advanced, there is good library called Image Moo. It's older but good working with CI3.