CI框架随记3

<?php
public function do_upload()
{
$config['upload_path'] = './uploads/';
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = 100;
$config['max_width'] = 1024;
$config['max_height'] = 768;
//载入上传类
$this->load->library('upload', $config);
//执行上传
if ( ! $this->upload->do_upload('userfile'))
{
$error = array('error' => $this->upload->display_errors());
$this->load->view('upload_form', $error);
}
else
{ //上传返回的信息
$data = array('upload_data' => $this->upload->data());
$this->load->view('upload_success', $data);
}
}
public function shangchuan(){
$info = $this->upload->data();
//上传缩略图----------------配置
$config['source_image']=$info['full_path'];
$config['create_thumb']=TRUE;//创建预览图像
$config['width']=75;
$config['height']=50;
//载入 
$this->load->library('image_lib',$config);
//执行动作
$status = $this ->image_lib ->resize();
if(!$status){
error('缩略图失败');
}
}
?>