TP框架的图片处理

//图片路径
$way=$info['n_img']['savepath'].$info['n_img']['savename'];
//缩略图路径
$smallway='./Public/Small/thumb_'.$info['n_img']['savename'];
//水印图片路径
$waterway='./Public/Water/water_'.$info['n_img']['savename'];
//缩略图
$image = new \Think\Image(); 
$image->open($way);// 按照原图的比例生成一个最大为150*150的缩略图并保存为thumb.jpg
$small=$image->thumb(150, 150)->save($smallway);
//水印图片路径
$water=$image->open($way)->water($smallway)->save($waterway); 

//写入库中图片路径
$newway=str_replace('./Public/','',$way);
//写入库中缩略图片路径
$smallway=str_replace('./Public/','',$smallway);
//写入库中水印图片路径
$waterway=str_replace('./Public/','',$waterway);