With the GD library of PHP you can rotate an image with the imagerotate function. The downside of this function is that it doesn't clip the edges and that is exactly what I need.
Here's an example image that shows my problem:
As you can see, in Photoshop the edges are clipped. In PHP the size of the image just increased because of the rotation. I really want to get the same result as I have in Photoshop. Any idea how to do this in PHP?
(I only have access to the GD library.)
分享 If you're too lazy to calculate the new size of the rotated image, just use a GD based image library that supports these calculations out of the box.
One such library is Wideimage. You load your original image, get it's width and height, then rotate it, then crop it with so called smart coordinates from center, middle and with the original images width and height:
$image = WideImage::load('big.png');
$width = $image->getWidth();
$height = $image->getHeight();
$image->rotate(120)->crop("center", "middle", $width, $height);
