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(PECL ps >= 1.1.0)
ps_close_image — Closes image and frees memory
$psdoc
, int $imageid
)Closes an image and frees its resources. Once an image is closed it cannot be used anymore.
psdoc Resource identifier of the postscript file as returned by ps_new() .
imageid Resource identifier of the image as returned by ps_open_image() or ps_open_image_file() .
Returns NULL on success 或者在失败时返回 FALSE .