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标题: php实现图片上传、剪切功能 [打印本页]

作者: xgnic 时间: 2018-2-14 05:36

         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
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。


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