(PECL gmagick >= Unknown)
Gmagick::getsize — Returns the size associated with the Gmagick object
Returns the size associated with the Gmagick object as an array with the keys "columns" and "rows".
此函数没有参数。
Returns the size associated with the Gmagick object as an array with the keys "columns" and "rows".
错误时抛出 GmagickException。