PHP implements image upload and cut functions, _PHP tutorial-PHP Tutorial-php.cn

PHP implements image upload and cut functions, _PHP tutorial

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Release： 2016-07-12 08:53:45

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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

<&#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);
    }
  }
}

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