(PECL rrd >= 0.9.0)
RRDGraph::saveVerbose — Saves the RRD database query into image and returns the verbose information about generated graph.
Saves the RRD database query into image file defined by method RRDGraph::__construct() and returns the verbose information about generated graph, if "-" is used as image filename, image data are also returned in result array.
This function has no parameters.
Array with detailed information about generated image is returned, optionally
with image data, FALSE
if error occurs.