如何在上传后裁剪图像并获取图像url？

Question

我正在使用 codeigniter 3.1。
我想在上传后裁剪图片，但裁剪不起作用。
裁剪后如何获取图像 url ?

if ($_FILES['upload']['size'] > 0) {
       $this->upload->initialize(array( 
                   "upload_path" => $this->upload_path,
                   "encrypt_name" => TRUE,
                   "remove_spaces" => TRUE,
                ));

                $data = $this->upload->data();
                $image = $data['file_name'];

        $this->load->library('image_lib');
        $this->image_lib->initialize(array( 
             "source_image" => $data,
             "new_image" => $this->upload_path. $image,
             "x_axis" => 300,
             "y_axis" => 300
                ));

        $data = $this->upload->data();
        $image = $data['file_name'];

  //Get full path of image

  }

Answer 1

在您的模型中使用这些函数

<?php 
 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;
    $target_path =  'uploads/thumb/'.$filename;

    $config_manip = array(

        'image_library' => 'gd2',
        'source_image' => $source_path,
        'new_image' => $target_path,
        'maintain_ratio' => TRUE,
        'width' => 300,
        'height' => 300
    );
    $this->image_lib->initialize($config_manip);
    $this->load->library('image_lib', $config_manip);


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

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('myFile')) { //<input type="file" name="myFile" />
        $response   =    array('upload_data' => $this->upload->data());
        $this->do_resize($response['upload_data']['file_name']);
        //return $response;
    }
    else{
        $error              =   array('error'=>$this->upload->display_errors());
        print_r($error);die(); 

    }
 }
}

像这样在你的控制器中调用这个函数

if(isset($_FILES)){

            $config                 =   $this->image_model->img_upload();
            $file_data              =   $this->upload->data();
            $data['img']            =   $file_data['file_name'];
        }

如何在上传后裁剪图像并获取图像url？

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