PHP implements image upload and cut functions, _PHP tutorial

php implements image uploading and cutting functions,

The example of this article introduces the specific code of php to implement image uploading and cutting functions in detail, for your reference, the specific content is as follows

<?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.

http://www.bkjia.com/PHPjc/1123787.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1123787.htmlTechArticlephp implements image uploading and cutting functions. This article provides a detailed introduction to php implementing image uploading and cutting functions. The specific code is for your reference. The specific content is as follows phpdefined('B...