# ps_setgray

(PECL ps >= 1.1.0)

ps_setgray — Sets gray value

### 说明

ps_setgray(resource `$psdoc`, float `$gray`): bool

Sets the gray value for all following drawing operations.

### 参数

`psdoc`

  Resource identifier of the postscript file as returned by ps_new().

`gray`

  The value must be between 0 (white) and 1 (black).

### 返回值

成功时返回 `true`， 或者在失败时返回 `false`。

### 参见

- ps_setcolor() - Sets current color

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