解决php的imagick库Strict Standards: Imagick::clone method is deprecated and it's use should be avoided

php的imagick库调用clone方法时会报Strict Standards: Imagick::clone method is deprecated and it's use should be avoided

解决方法很简单：

//$thumbnail = $im->clone(); //Strict Standards: Imagick::clone method is deprecated and it's use should be avoided
$thumbnail = clone $im;