(PECL gmagick >= Unknown)
Gmagick::getimagetype — Gets the potential image type
Gets the potential image type.
锟剿猴拷锟斤拷没锟叫诧拷锟斤拷锟斤拷
Returns the potential image type.
锟斤拷锟斤拷时锟阶筹拷 GmagickException锟斤拷