PHP implements image upload and cut functions based on CodeIgniter, _PHP tutorial

php implements image uploading and cutting functions based on CodeIgniter.

The examples in this article share codeigniter image uploading, cutting, and controller classes for your reference. The specific content is as follows

<&#63;php
defined('BASEPATH') OR exit('No direct script access allowed');

class Index extends MY_Controller {
 function __construct(){
    parent::__construct();
    $this->load->helper(array('form', 'url'));
  }

  /**
   * 首页
   */
  public function index() {
    $this->load->view('upload_form', array('error' => ' ' ));
  }
  
  
 public function do_upload()
  {
    $config['upload_path']   = './data/uploads/';
    $config['allowed_types']  = 'gif|jpg|png';
    $config['max_size']   = 100;
    $config['max_width']    = 1024;
    $config['max_height']    = 768;

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

    if ( ! $this->upload->do_upload('userfile'))
    {
      $error = array('error' => $this->upload->display_errors());

      $this->load->view('upload_form', $error);
    }
    else
    {
      $data = array('upload_data' => $this->upload->data());
      
      $this->load->library('image_lib');      
   list($width, $height) = getimagesize($data['upload_data']['full_path']);
   $config['image_library'] = 'gd2';
   $config['source_image'] = $data['upload_data']['full_path'];
   $config['maintain_ratio'] = TRUE;
   if($width >= $height)
   {
     $config['master_dim'] = 'height';
   }else{
     $config['master_dim'] = 'width';
   }
   $config['width'] = 180;
   $config['height'] = 180;
   $this->image_lib->initialize($config);
   $this->image_lib->resize();
 
   $config['maintain_ratio'] = FALSE;
   if($width >= $height)
   {
     $config['x_axis'] = floor(($width * 180 / $height - 180)/2);
   }else{
     $config['y_axis'] = floor(($height * 180 / $width - 180)/2);
   }
   $this->image_lib->initialize($config);
   $this->image_lib->crop();
   
      $this->load->view('upload_success', $data);
    }
  }
}

The above is the entire content of this article. I hope it will be helpful to everyone in learning PHP programming.

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