Gmagick::getimagematte
  (PECL gmagick >= Unknown)
Gmagick::getimagematte — Check if the image has a matte channel
  
 
  说明
  
   public Gmagick::getimagematte(): 
int 
  
  
 
 
  返回值
  
   Returns true if the image has a matte channel, otherwise false.
  
  
 
  错误/异常
  
   错误时抛出
GmagickException。