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    rrd_xport

    (PECL rrd >= 0.9.0)

    rrd_xport — Exports the information about RRD database

    説明

    rrd_xport(array $options): array

    Exports the information about RRD database file. This data can be converted to XML file via user space PHP script and then restored back as RRD database file.

    パラメータ

    options

    Array of options for the export, see rrd xport man page.

    戻り値

    Array with information about RRD database file,失敗した場合に false を返します.

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    User Contributed Notes 2 notes

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    1
    mrezahamedany
    7 years ago
    an example that shows the usage of this method ( tested in php version 5.6.30 )

    class Rrd{
    public function getData($id , $start , $end)
    {
    $step = 300 ;
    $rrdFile ="/path/to/file/'.$id.rrd";

    try{
    $options = ["--start", $start , "--end", $end ,"-- step",$step,"DEF:out=$rrdFile:name:AVERAGE", "XPORT:out:test"];
    $result = rrd_xport($options);
    $datas = $result['data'][0]['data'];
    foreach($datas as $data => $value){

    if( is_nan($value) === true ) $value = 0 ;
    $output[] = [$data=>$value] ;
    }
    return json_encode($output);

    }catch (Exception $e){

    dd($e->getMessage());
    }

    }
    }
    up
    1
    Peter R
    1 year ago
    A small example of connecting to an rrdcached daemon (This one running on localhost, but works across network as well) and getting in and output bits from an interface.

    $options = array(
    '--daemon', '127.0.0.1:42217',
    '--start', time() - 3600,
    'DEF:in_oct=rrdfile.rrd:INOCTETS:AVERAGE',
    'DEF:out_oct=rrdfile.rrd:OUTOCTETS:AVERAGE',
    'CDEF:in_bits=in_oct,8,*',
    'CDEF:out_bits=out_oct,8,*',
    'XPORT:in_bits',
    'XPORT:out_bits'
    );

    $result = rrd_xport($options);

    var_dump($result);
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