PECL / rrd擴展提供了對RRDtool C庫的綁定。RRDtool是用于時間序列數據的開源行業標準，高性能數據記錄和圖形系統。 [https://pecl.php.net/package/rrd](https://pecl.php.net/package/rrd). * [RRD功能](https://www.php.net/manual/en/ref.rrd.php) * [rrd\_create](https://www.php.net/manual/en/function.rrd-create.php)—創建rrd數據庫文件 * [rrd\_error](https://www.php.net/manual/en/function.rrd-error.php)—獲取最新的錯誤消息 * [rrd\_fetch](https://www.php.net/manual/en/function.rrd-fetch.php)—提取圖形數據作為數組 * [rrd\_first](https://www.php.net/manual/en/function.rrd-first.php)—從rrd文件中獲取第一個樣本的時間戳 * [rrd\_graph](https://www.php.net/manual/en/function.rrd-graph.php)—從數據創建圖像 * [rrd\_info](https://www.php.net/manual/en/function.rrd-info.php)—獲取有關rrd文件的信息 * [rrd\_last](https://www.php.net/manual/en/function.rrd-last.php)—獲取最后一個樣本的Unix時間戳 * [rrd\_lastupdate](https://www.php.net/manual/en/function.rrd-lastupdate.php)—獲取有關最近更新的數據的信息 * [rrd\_restore](https://www.php.net/manual/en/function.rrd-restore.php)—從XML轉儲恢復RRD文件 * [rrd\_tune](https://www.php.net/manual/en/function.rrd-tune.php)—調整一些RRD數據庫文件頭選項 * [rrd\_update](https://www.php.net/manual/en/function.rrd-update.php)—更新RRD數據庫 * [rrd\_version](https://www.php.net/manual/en/function.rrd-version.php)—獲取有關基礎rrdtool庫的信息 * [rrd\_xport](https://www.php.net/manual/en/function.rrd-xport.php)—導出有關RRD數據庫的信息 * [rrdc\_disconnect](https://www.php.net/manual/en/function.rrdc-disconnect.php)—關閉與rrd緩存守護程序的所有未完成的連接 * [RRDCreator](https://www.php.net/manual/en/class.rrdcreator.php)— RRDCreator類 * [RRDCreator :: addArchive](https://www.php.net/manual/en/rrdcreator.addarchive.php)—添加[RRA-](https://www.php.net/manual/en/rrdcreator.addarchive.php)每個數據源的數據值存檔 * [RRDCreator :: addDataSource](https://www.php.net/manual/en/rrdcreator.adddatasource.php)—為RRD數據庫添加數據源定義 * [RRDCreator :: \_\_ construct](https://www.php.net/manual/en/rrdcreator.construct.php)—創建新的RRDCreator實例 * [RRDCreator :: save](https://www.php.net/manual/en/rrdcreator.save.php)—將RRD數據庫保存到文件 * [RRDGraph](https://www.php.net/manual/en/class.rrdgraph.php)— RRDGraph類 * [RRDGraph :: \_\_ construct](https://www.php.net/manual/en/rrdgraph.construct.php)—創建新的RRDGraph實例 * [RRDGraph :: save](https://www.php.net/manual/en/rrdgraph.save.php)—將查詢結果保存到圖像中 * [RRDGraph :: saveVerbose](https://www.php.net/manual/en/rrdgraph.saveverbose.php)—將RRD數據庫查詢保存到圖像中并返回有關所生成圖形的詳細信息 * [RRDGraph :: setOptions](https://www.php.net/manual/en/rrdgraph.setoptions.php)—設置rrd圖導出的選項 * [RRDUpdater](https://www.php.net/manual/en/class.rrdupdater.php)— RRDUpdater類 * [RRDUpdater :: \_\_ construct](https://www.php.net/manual/en/rrdupdater.construct.php)—創建新的RRDUpdater實例 * [RRDUpdater :: update](https://www.php.net/manual/en/rrdupdater.update.php)—更新RRD數據庫文件