(PECL haru >= 0.0.1)
HaruAnnotation::setBorderStyle — Set the border style of the annotation
$width
   , int $dash_on
   , int $dash_off
   )Defines the style of the border of the annotation. This function may be used with link annotations only.
width
     The width of the border line.
dash_on
     The dash style.
dash_off
     The dash style.
   Returns TRUE on success.
  
Throws a HaruException on error.