ps_open_file

(PECL ps >= 1.1.0)

ps_open_file — Opens a file for output

bool ps_open_file ( resource $psdoc [, string $filename ] )

Creates a new file on disk and writes the PostScript document into it. The file will be closed when ps_close() is called.

psdoc: Resource identifier of the postscript file as returned by ps_new().
filename: The name of the postscript file. If filename is not passed the document will be created in memory and all output will go straight to the browser.

成功时返回 TRUE，或者在失败时返回 FALSE。