(PECL ps >= 1.1.0)
ps_close_image — Closes image and frees memory
$psdoc, int $imageid): void|falseCloses an image and frees its resources. Once an image is closed it cannot be used anymore.
psdocResource identifier of the postscript file as returned by ps_new().
imageidResource identifier of the image as returned by ps_open_image() or ps_open_image_file().
Returns null on success 或者在失敗時(shí)返回 false.