imagesetclip

(PHP 7.2)

imagesetclip — Set the clipping rectangle

说明

bool imagesetclip ( resource $im , int $x1 , int $y1 , int $x2 , int $y2 )

imagesetclip() sets the current clipping rectangle, i.e. the area beyond which no pixels will be drawn.

参数

image

由图象创建函数(例如imagecreatetruecolor())返回的图象资源。

x1

The x-coordinate of the upper left corner.

y1

The y-coordinate of the upper left corner.

x2

The x-coordinate of the lower right corner.

y2

The y-coordinate of the lower right corner.

返回值

成功时返回 TRUE， 或者在失败时返回 FALSE。

参见