SunshinePHP Developer Conference 2015

rrd_fetch

(PECL rrd >= 0.9.0)

rrd_fetchFetch the data for graph as array.

Descrizione

array rrd_fetch ( string $filename , array $options )

Gets data for graph output from RRD database file as array. This function has same result as rrd_graph(), but fetched data are returned as array, no image file is created.

Elenco dei parametri

filename

RRD database file name.

options

Array of options for resolution specification.

Valori restituiti

Returns information about retrieved graph data.

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User Contributed Notes 2 notes

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stephanecharette at gmail dot com
1 year ago
For example, this worked for me:

<?php
$result
= rrd_fetch( "mydata.rrd", array( "AVERAGE", "--resolution", "60", "--start", "-1d", "--end", "start+1h" ) );
?>

This will fetch all fields.  You then have to use something like this to get to a specified rrd field:

<?php
foreach ( $result["data"]["myfield"] as $key => $value )
{
    echo
"At timestamp $key, the value for myfield is $value.\n";
}
?>
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0
ernestas at versme dot net
1 year ago
A few years ago, the extension was patched so that it would count options itself. But for me, it's buggy (it does not work with more than 3 arguments) and neither does work.
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