如何在php codeigniter中调整图像高度和宽度

Question

 public function resize() { $config['width'] = $this->input->post('width'); $config['height'] = $this->input->post('height'); $config['maintain_ratio'] = TRUE; $config['source_image'] = './uploads1/book.jpg'; $config['new_image'] = './uploads1/book_new.jpg'; $this->image_lib->initialize($config); $resize = $this->image_lib->resize(); }

How to resize image height and width in php codeigniter, only height is not resizing properly but width i am getting

Answer 1

 $this->load->library('image_lib');
if (!empty($_FILES['advert_image'])) {

                $filename = substr(md5(time()), 0, 28) . strrchr($_FILES['advert_image']['name'], '.');
                $config['upload_path'] = 'public/events/images/';

                $config['allowed_types'] = 'jpg|jpeg|png|JPG|JPEG|PNG|BMP|bmp|gif|GIF';
                $config['file_name'] = $filename;

                $config['is_image'] = true;

                $this->load->library('upload', $config);
                $this->upload->initialize($config);
                //$this->upload->do_upload('advert_image');
                //start resize image
                if (!$this->upload->do_upload('advert_image')) {
                    echo "error" . count;
                } else {
                    $image_data = $this->upload->data();

                    $configer = array(
                        'image_library' => 'gd2',
                        'source_image' => $image_data['full_path'],
                        'maintain_ratio' => TRUE,
                        'width' => 480,
                        'height' => 480,
                    );
                    $this->image_lib->clear();
                    $this->image_lib->initialize($configer);
                    $this->image_lib->resize();
                }
                //end resize 
                $profile_pic = isset($filename) ? $filename : "";
            }

Answer 2

You have to initialize the library to use it after setting config values:

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

Be sure the input values of height is not empty too!