rrd_fetch

(PECL rrd >= 0.9.0)

rrd_fetch — Fetch the data for graph as array

Descrizione

rrd_fetch(string $filename, array $options): array

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 1 note

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-5

stephanecharette at gmail dot com ¶

11 years 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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