Gets the timestamp of the first sample from rrd file.

rrd_first

(PECL rrd >= 0.9.0)

rrd_first — Gets the timestamp of the first sample from rrd file.

int rrd_first ( string $file [, int $raaindex = 0 ] )

Returns the first data sample from the specified RRA of the RRD file.

file: RRD database file name.
raaindex: The index number of the RRA that is to be examined. Default value is 0.

Integer number of unix timestamp, FALSE if some error occurs.