ps_setgray

(PECL ps:1.1.0-1.1.1)

ps_setgray — Sets gray value

bool ps_setgray ( resource $psdoc , float $gray )

Sets the gray value for all following drawing operations.

psdoc: Resource identifier of the postscript file as returned by ps_new().
gray: The value must be between 0 (white) and 1 (black).

如果成功则返回 TRUE，失败则返回 FALSE。