[php]
// 縮圖
function _createThumbnail($fileName, $isThumb, $thumbMarker="", $width, $height) {
// 參數
$config[‘image_library’] = ‘gd2’;
$config[‘source_image’] = $fileName;
$config[‘create_thumb’] = $isThumb;
$config[‘maintain_ratio’] = TRUE;
$config[‘master_dim’] = ‘width’;
if(isset($thumbMarker) && $thumbMarker!=""){
$config[‘thumb_marker’] = $thumbMarker;
}
$config[‘width’] = $width;
$config[‘height’] = $height;

$this->load->library(‘image_lib’, $config);
$this->image_lib->clear();
$this->image_lib->initialize($config);
if(!$this->image_lib->resize()) echo $this->image_lib->display_errors();
}
[/php]
上傳
[php]
function uploadimage(){
$name = $this->input->get_post(‘my_file’);
$config[‘upload_path’] = ‘./uploads/’;
$config[‘allowed_types’] = ‘gif|jpg|png’;
$config[‘file_name’] = $name;
$config[‘overwrite’] = true;
$config[‘max_size’] = 4096;
//$config[‘max_width’] = 5000;
//$config[‘max_height’] = 5000;
$this->load->library(‘upload’, $config);
if ( ! $this->upload->do_upload())
{
$data[‘errormsg’] = array(‘error’ => $this->upload->display_errors());
$this->load->view(‘welcome_message’, $data);
}
else
{
$fInfo = $this->upload->data();
$this->_createThumbnail($fInfo[‘full_path’],TRUE,"",330,480);
$this->_createThumbnail($fInfo[‘full_path’],TRUE,"_tn",110,160);

$data[‘filename’]=$this->upload->data(‘file_name’);
$this->load->view(‘welcome_message’,$data);
}

}
[/php]