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): intReturns 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, 或者在失败时返回 false.
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