Php/docs/function.rrd-first

• PHP Manual
• RRD 函数
• 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

说明

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

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

参数

file

RRD database file name.

raaindex

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

返回值

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