php man page for rrd_fetch

RRD_FETCH(3)								 1							      RRD_FETCH(3)

rrd_fetch - Fetch the data for graph as array.

SYNOPSIS
       array rrd_fetch (string	$filename, array  $options)

DESCRIPTION
	Gets  data  for graph output from RRD database file as array. This function has same result as rrd_graph(3), but fetched data are returned
       as array, no image file is created.

PARAMETERS
	      o $filename
		- RRD database file name.

	      o $options
		- Array of options for resolution specification.

RETURN VALUES
	Returns information about retrieved graph data.

PHP Documentation Group 													      RRD_FETCH(3)