(PECL imagick 2.0.0)
Imagick::setImageIndex — Set the iterator position
本函数还未编写文档，仅有参数列表。
Set the iterator to the position in the image list specified with the index parameter.
This method has been deprecated. See Imagick::setIteratorIndex
The position to set the iterator to
Returns TRUE on success.
Throws ImagickException on error.