phpThumb是一个PHP的类用来生成图片的缩略图。除了缩放图片外，还能将图片转换成不同的格式输出（比如将GIF格式的图片输出为PNG格式），当然，这些都是基础功能，其特色功能还包括色彩、特效等。-phpThumb is a PHP class for generating image thumbnails. In addition to scale the image, the image can be converted into different output formats (such as the GIF format images output PNG format), of course, these are the basic functions, its features also include color and special effects.