PHP マニュアル

rrd_first

Gets the timestamp of the first sample from rrd file

説明

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

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

パラメータ

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

戻り値

Integer number of unix timestamp,失敗した場合に false を返します.