rrd_xport
(PECL rrd >= 0.9.0)
rrd_xport — Exports the information about RRD database
说明
rrd_xport(array
$options): arrayExports the information about RRD database file. This data can be converted to XML file via user space PHP script and then restored back as RRD database file.
参数
-
options -
Array of options for the export, see rrd xport man page.
返回值
Array with information about RRD database file, 或者在失败时返回 false.
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User Contributed Notes 1 note
mrezahamedany ¶
4 years ago
an example that shows the usage of this method ( tested in php version 5.6.30 )
class Rrd{
public function getData($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());
}
}
}