Codeigniter将单个图像转换为多个大小，即350*250、50*50和原始大小

Question

我是CodeIgniter的新手。这就是我想做的：

1. 将产品图像调整为350*250、50*50和原始图像，同时从管理员上传添加产品中的图像。

2. 三个不同文件夹中的所有这三个图像。

   这是我的代码-

   public function products()
   {
   $config=array();
   $config['upload_path']="./uploads/";
   $config['allowed_types']="jpg|jpeg|gif|png";
   $this->load->library('upload',$config);
   $this->upload->initialize($config);
   if ( ! $this->upload->do_upload('userfile')) 
   {
   $error = array('error' => $this->upload->display_errors());                
   }
   else 
   {              
   $file_data = $this->upload->data();
   $data1['img']=base_url().'images/'.$file_data['file_name'];
   $data_image = array(
   'agenda_id' => $this->input->post('agenda_id'),
   'file'      => $file_data['file_name']
   );
   $config['image_library']='gd2';
   $config['source_image']='./uploads/'.$file_data["file_name"];
   $config['create_thumb']=FALSE;
   $config['maintain_ratio']=FALSE;
   $config['quality']='60%';                   
   $config['width']=350;
   $config['height']=250;
   $config['new_image']='./uploads350/'.$file_data["file_name"];
   $this->upload->initialize($config);
   $this->load->library('image_lib',$config);
   $this->image_lib->resize();
   }  
   $this->load->model("Admin_model");
   $data= array(
   "Type" =>$this->input->post("Type"),
   "Brand" =>$this->input->post("Brand"),
   "Product_Name" =>$this->input->post("Product_Name"),
   "Price" =>$this->input->post("Price"),
   "Image"=>$data_image['file']
   );
   $this->Admin_model->admin($data);
   $this->session->set_flashdata('message', 'Product added successfully');
   redirect('Admin/product_list');    
   }
   

Answer 1

这应该可以正常工作(尚未测试(。只需确保文件夹存在即可。此外，如果我是你，我可能会把所有东西都放在同一个文件夹里，只需准备大小的后记，比如some_image_50.jpg:

public function products() {
$config = array();
$config['upload_path'] = "./uploads/";
$config['allowed_types'] = "jpg|jpeg|gif|png";
$this->load->library('upload', $config);
$this->upload->initialize($config);
if (!$this->upload->do_upload('userfile')) {
$error = array('error' => $this->upload->display_errors()); // do something with this...
// e.g. show_error($this->upload->display_errors());
} else {
$file_data = $this->upload->data();
$data1['img'] = base_url() . 'images/' . $file_data['file_name'];
$data_image = array(
'agenda_id' => $this->input->post('agenda_id'),
'file' => $file_data['file_name']
);
//$config['image_library'] = 'gd2'; (default; not needed)
$this->load->library('image_lib');
$cfg['source_image'] = './uploads/' . $file_data["file_name"];
$cfg['create_thumb'] = FALSE;
$cfg['maintain_ratio'] = FALSE;
$cfg['quality'] = '60%';
$cfg['width'] = 350;
$cfg['height'] = 250;
$cfg['new_image'] = './uploads350/' . $file_data["file_name"];
//$this->upload->initialize($config); why??
$this->image_lib->initialize($cfg);
$this->image_lib->resize();
// the following vars will override certain vars above and keep the ones we haven't overridden
$cfg['width'] = 50;
$cfg['height'] = 50;
$cfg['new_image'] = './uploads50/' . $file_data["file_name"]; // make sure folder exists
$this->image_lib->initialize($cfg);
$this->image_lib->resize();
}
$this->load->model("Admin_model");
$data = array(
"Type" => $this->input->post("Type"),
"Brand" => $this->input->post("Brand"),
"Product_Name" => $this->input->post("Product_Name"),
"Price" => $this->input->post("Price"),
"Image" => $data_image['file']
);
$this->Admin_model->admin($data);
$this->session->set_flashdata('message', 'Product added successfully');
redirect('Admin/product_list');
}