图片处理的问题

youzlm

function do_image($width=0,$height=0,$source_image_path=null){
  $config = null;
  $config['image_library'] = 'gd2';
  $config['source_image'] = $source_image_path;
  $config['create_thumb'] = TRUE;
  $config['maintain_ratio'] = TRUE;
  $config['width'] = $width;
  $config['height'] = $height;
  $config['quality'] = "100%";
  $config['thumb_marker'] = '';
  $this->load->library('image_lib');
  $this->image_lib->clear();
  $this->image_lib->initialize($config);
  if (!$this->image_lib->resize())
   echo $this->image_lib->display_errors();
}
do_image(169,200,$data['full_path']);

请问为什么不能按我所要求的来切图片.第次高都达不到200,宽可以达的到169.
这是为什么啊.是不是我的CONFIG写错了

乌有

$config['maintain_ratio'] = TRUE;
把这个设为FALSE.