php实现图片上传、剪切功能
本文实例为大家详细介绍了php实现图片上传、剪切功能的具体代码,供大家参考,具体内容如下:
- <?php
 - defined('BASEPATH') OR exit('No direct script access allowed');
 - //phpfensi.com
 - 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);
 - }
 - }
 - }
 
以上就是本文的全部内容,希望对大家学习php程序设计有所帮助。
