(PECL ps >= 1.1.0)
ps_open_file — Opens a file for output
$psdoc
[, string $filename
] ) : boolCreates 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
。