CI's image class
Now that we have our file uploaded we can use CI's image class to manipulate it. This library works with the three most popular image libraries for PHP—GD/GD2, NetPBM, and ImageMagick. Use phpinfo() to find which of these is supported by your server. Image watermarking only works with GD/GD2, though:
The image manipulation class allows you to perform four basic functions with images:
- Resize: You may want to fit them into a standard size on your screen or you may want to cut them right down to thumbnail images
- Crop
- Rotate
- Watermark (only available with
GD/GD2): This is often used to put a copyright notice on an image so that people can't download it from your site and pass it as their own work
Note
The GD library is always needed in ...
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