Updates the RRD database

# rrd_update

(PECL rrd >= 0.9.0)

rrd_update — Updates the RRD database

### 説明

function rrd_update(string `$filename`, array `$options`): bool

Updates the RRD database file. The input data is time interpolated according to the properties of the RRD database file.

### パラメータ

`filename`
  RRD database file name. This database will be updated.
`options`
  Options for updating the RRD database. This is list of strings. See man page of rrd update for whole list of options.

### 戻り値

成功した場合に `true` を、失敗した場合に `false` を返します。

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