resizing images not working with me in codeigniter - codeigniter

Question

i want to resize image in codeigniter in one function
i called Image_lib and upload libraries on my controller
the images folder gets read/write .
That is my controller.
public function update(){
$config['upload_path']="./images/";
$config['allowed_types']='jpg|jpeg|png';
$config['encrypt_name']=TRUE;
$config['max_size']='1024';
$this->load->library('upload',$config);
if(!$this->upload->do_upload()){
$this->load->view('settings_v',array(
'userdata'=>$this->user->userdata(),
'c_data'=>$this->Settings_m->index(),
'error'=>$this->upload->display_errors(),
));
} else{
$image=$this->Settings_m->image(); // get current image to remove it
if(!empty($image)){
$path='images/'.$image;
unlink($path);
}
$config['image_library'] = 'gd2';
$config['source_image'] = '.images/'.$filename;
$config['new_image'] = '.images/'.$filename;
$config['create_thumb'] = TRUE;
$config['maintain_ratio'] = TRUE;
$config['width'] = 30;
$config['height'] = 30;
$this->load->library('image_lib', $config);
$this->image_lib->resize();
$file_data=$this->upload->data();
$filename=$file_data['file_name'];
$this->Settings_m->update($filename);
//redirect('Settings','refresh');
}
}
Thanks ,

Answer 1

Change '.images/ to './images/' also you never defined $filename before using it in image lib config.
$file_data = $this->upload->data();
$filename = $file_data['file_name'];
$config['image_library'] = 'gd2';
$config['source_image'] = './images/' . $filename;
$config['new_image'] = './images/' . $filename;
$config['create_thumb'] = TRUE;
$config['maintain_ratio'] = TRUE;
$config['width'] = 30;
$config['height'] = 30;
$this->load->library('image_lib', $config);
$this->image_lib->resize();
$this->Settings_m->update($filename);
//redirect('Settings','refresh');
Also if you just want to resize the source image and not have a separate resized image you should remove $config['new_image'] and $config['create_thumb'] as per the docs. Otherwise just use create_thumb or new_image (with a different path/filename than the original) but not both.
Notes regarding this preference:
If neither of the two preferences listed above (create_thumb, and
new_image) are used, the resizing method will instead target the
original image for processing.