PHP报错调试

class userimage {

function userimagetx($file){

include_once('./Lib/Base/pic.php');
$image = new pic;
$new_filename = '/Upimage/Userthumb/ImageX'.'/ceshi';
$new_file = $image->zoom_to_small($file, $new_filename, 20, 20);
echo '<pre style="text-align:left">';
print_r($file);
print_r($new_filename);
print_r($image);
echo '</pre>';
echo '<img src="'.$new_file.'" />';
}

}