如何在Codeigniter中针对单个图像上传将图像调整为较小的尺寸？
[英]How to resize an image to a smaller size in codeigniter for a single Image upload?
问题描述
I want to resize the images during upload to a small size so that they take less time while loading on the website. 
我想将上传过程中的图像调整为较小的尺寸，以便在加载到网站上时花费较少的时间。
And I also want to maintain the aspect ratio so that a portrait image doesn't get stretched and a landscape image doesn't get squeezed.That is without changing the actual dimensions of the image. 而且我还想保持宽高比，以使肖像图像不会被拉伸，风景图像也不会受到挤压，而这并没有改变图像的实际尺寸。
2 个解决方案
解决方案1
0 2015-07-23 07:33:54
First convert your images to Jpeg, gif and png images as these are compressed images. 首先将图像转换为Jpeg，gif和png图像，因为它们是压缩图像。
In addition you can use ImageMagick to compress the image: Recommendation for compressing JPG files with ImageMagick 另外，您可以使用ImageMagick压缩图像： 建议使用ImageMagick 压缩JPG文件
解决方案2
0 已采纳 2015-07-23 16:14:49
An Image Manipulation class exists in CodeIgniter and can solve Your problem. ImageIgniter中存在一个图像处理类，可以解决您的问题。 Just read the official guide to learn more. 只需阅读官方指南即可了解更多信息。
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