CI3上传类
1、设置为autoload自动加载,则需要初始化
$config['upload_path'] = './uploads/';
$config['allowed_types'] = 'mp4|avi|mpeg|mov|flv|rmvb';
$config['max_size'] = 204800;
$this->upload->initialize($config); //初始化配置
2、如果是手动加载
$config['upload_path'] = './uploads/';
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = 1000;
$config['max_width'] = 1024;
$config['max_height'] = 768;
$this->load->library('upload', $config); //手动加载类库和配置