This function is currently not documented; only the argument list is available.
This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.
Composites an image onto the current image, using the specified composition operator, specified position, and at the specified size.
composition operator. One of COMPOSITE_ constants
x coordinate of the top left corner
y coordinate of the top left corner
width of the composition image
height of the composition image
the Imagick object where composition image is taken from