(PECL ps >= 1.1.0)
ps_close_image — Closes image and frees memory
Closes an image and frees its resources. Once an image is closed it cannot be used anymore.
Resource identifier of the postscript file as returned by ps_new().
Resource identifier of the image as returned by ps_open_image() or ps_open_image_file().
Returns NULL on success or FALSE on failure.