Warning: This function is
currently not documented; only the argument list is
available.
Warning: This function is
EXPERIMENTAL. The behaviour of this function, the
name of this function, and anything else documented about this
function may change without notice in a future release of PHP.
Use this function at your own risk.
Returns the index of the current active image within the Imagick object.
This method has been deprecated. See Imagick::getIteratorIndex
Return Values
Returns an integer containing the index of the image in the stack,
throwing ImagickException on error.