(PECL imagick 2.0.0)
ImagickDraw::polyline — Draws a polyline
本函数还未编写文档，仅有参数列表。
Draws a polyline using the current stroke, stroke width, and fill color or texture, using the specified array of coordinates.
array of x and y coordinates: array( array( 'x' => 4, 'y' => 6 ), array( 'x' => 8, 'y' => 10 ) )
Returns TRUE on success.