Creates a new file on disk and writes the PostScript document into it. The
file will be closed when ps_close() is called.
Parameters
- 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.
Return Values
Returns TRUE
on success or FALSE
on failure.