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怎么在不改变图片大小情况下压缩图片质量

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Release： 2016-06-13 13:42:21
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如何在不改变图片大小情况下压缩图片质量？
如何不改变图片大小情况下压缩图片质量？

像PHOTOSHOP一样，可以设置图片质量保存的。

求教，谢谢。

------解决方案--------------------
bool imagejpeg ( resource image [, string filename [, int quality]] )

quality 为可选项，范围从 0（最差质量，文件更小）到 100（最佳质量，文件最大）。默认为 IJG 默认的质量值（大约 75）。 

Related labels：
photoshop quality resource
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