ps_delete
(PECL ps >= 1.1.0)
ps_delete — Deletes all resources of a PostScript document
說明
ps_delete(resource
$psdoc): boolMainly frees memory used by the document. Also closes a file, if it was not closed before with ps_close(). You should in any case close the file with ps_close() before, because ps_close() not just closes the file but also outputs a trailor containing PostScript comments like the number of pages in the document and adding the bookmark hierarchy.
返回值
成功時返回 true， 或者在失敗時返回 false。