RRD 関数
PHP Manual

rrd_first

(PECL rrd >= 0.9.0)

rrd_firstGets the timestamp of the first sample from rrd file.

説明

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

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

パラメータ

file

Filename for a rrd file.

raaindex

The index number of the RRA that is to be examined. Default value is 0.

返り値

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


RRD 関数
PHP Manual