thinkphp產生多張縮圖

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public function SaveGoodsPhoto() {
import(‘ORG.Net.UploadFile‘);
$upload = new UploadFile(); // 執行個體化上傳類
$upload->maxSize = 3145728; // 設定附件上傳大小
$upload->allowExts = array(‘jpg‘, ‘gif‘, ‘png‘, ‘jpeg‘); // 設定附件上傳類型
$upload->savePath = C(‘UPPATH‘) . ‘GoodsPhotos/‘; // 設定附件上傳目錄
$upload->thumb = true; //產生縮圖
$upload->thumbPrefix = ‘thumbx_,thumbm_,thumbd_‘;    //產生兩張縮圖
$upload->thumbMaxWidth = ‘50,220,400‘;
$upload->thumbMaxHeight = ‘50,220,400‘;
if (!$upload->upload()) {// 上傳錯誤提示錯誤資訊
$this->error($upload->getErrorMsg());
} else {// 上傳成功 擷取上傳檔案資訊
$info = $upload->getUploadFileInfo();
$gp = new GoodsPicturesModel();
$sq = $gp->where(array(
‘goods_id‘ => $this->_post(‘goods_id‘)
))->order(‘sequence desc‘)->getField(‘sequence‘);
if (isset($sq)) {
$res = $gp->add(array(
‘goods_id‘ => $this->_post(‘goods_id‘),
‘src‘ => $info[0][‘savename‘],
‘sequence‘ => $sq + 1
));
} else {
$res = $gp->add(array(
‘goods_id‘ => $this->_post(‘goods_id‘),
‘src‘ => $info[0][‘savename‘],
‘sequence‘ => 0
));
}
if ($res != FALSE) {
$this->success("上傳成功！");
} else {
$this->error("上傳失敗！");
}
}
}

thinkphp產生多張縮圖