Question

下面是代码，当我尝试使用宽度小于1000px的图像时工作正常，但是当我尝试使用大于1000px的图像时，它无法正常工作。

$img_array = array();
    $img_array['image_library'] = 'gd2';
    $img_array['maintain_ratio'] = TRUE;
    $img_array['create_thumb'] = TRUE;
    $thumb_name = $img_array['new_image'] = './public/image/thumb/' . $file;
    //you need this setting to tell the image lib which image to process
    $img_array['source_image'] = $path;
    $img_array['width'] = 180;
    $img_array['height'] = 250;


    $this->image_lib->clear(); // added this line
    $this->image_lib->initialize($img_array); // added this line
    if (!$this->image_lib->resize())
    {
        echo $this->image_lib->display_errors(); exit;
    }
    return $thumb_name;
    }

Answer 1

在Models文件夹中将模型名称创建为Image_model将此代码放入模型中

class Image_model extends CI_Model {
public function __construct()   {
    parent::__construct();
    $this->load->helper('url');
    $this->load->library('upload');
    $this->load->library('image_lib');
}
public function do_resize($filename)
{

    $source_path =  'uploads/' . $filename;
    //create a directory thumb in uploads set as target path
   $target_path =  'uploads/thumb/thumb_'.$filename;

    $config_manip = array(

        'image_library' => 'gd2',
        'source_image' => $source_path,
        'new_image' => $target_path,
        'maintain_ratio' => TRUE,
        'width' => 180,
        'height' => 250
    );
    $this->image_lib->initialize($config_manip);
    $this->load->library('image_lib', $config_manip);


    if (!$this->image_lib->resize()) {
        echo $this->image_lib->display_errors();
        die();
    }
    // clear //
    //$this->image_lib->clear();
}

public function img_upload()
{
    $config = array(
        'upload_path' => "uploads",
        'allowed_types' => "*",
        'overwrite' => TRUE,
        'max_size' => "5048000", // Can be set to particular file size , here it is 2 MB(2048 Kb)
        'max_height' => "3000",
        'max_width' => "3000"
    );
    $this->upload->initialize($config);
    $this->load->library('upload', $config);

    if($this->upload->do_upload()) {
        $response   =    array('upload_data' => $this->upload->data());
        //here calling the function do_resize
       $this->do_resize($response['upload_data']['file_name']);
        //return $response;
    }
    /*else{
        $error              =   array('error'=>$this->upload->display_errors());
        //print_r($error);die(); 

    }*/
  }
}

并像这样调用功能控制器这里是控制器

class your_controller extends CI_Controller {

function __construct(){
    parent::__construct();
    $this->load->model('image_model');
}
   // here the function to save name in database
public function add() {
        $data                       =   array();
        $config                     =   array();    
        if(isset($_FILES)){
             $config                =   $this->image_model->img_upload();
             $file_data             =   $this->upload->data();
             $data['image']         =   $file_data['file_name'];
        }
          else
            $data['image']          =   "no-image";
        // here the function in your model to save the name of image in your database                    
         $last_id               =       $this->your_model->save($data);
         $this->load->view('your_view');
    }

Codeigniter Image Resize（）的工作宽度不超过1000px

1 个答案: