librenms_rrd_service_perf_test.php

<?php

$perf = array
(
    Qcache_free_memory => array
        (
            value => 15848240,
            uom => ''
        ),
    Qcache_inserts => array
        (
            value => 42685,
            uom => c
        ),
    Qcache_lowmem_prunes => array
        (
            value => 0,
            uom => c
        ),
    "Qcache_qu@eries_in_cachepurple" => array
        (
            value => 5390,
            uom => c
        ),
    "Qcache_qu@eries_in_cache" => array
        (
            value => 1,
            uom => ''
        ),
    "Qcache_qu@eries_in_cac4e" => array
        (
            value => 2,
            uom => ''
        ),
    "Qcache_qu@eries_in_cac3e" => array
        (
            value => 3,
            uom => ''
        ),
    "Qcache_qu@eries_in_cac2e" => array
        (
            value => 4,
            uom => ''
        ),
);

print_r($perf);

        foreach ($perf as $k => $v) {
            $ds_name = preg_replace('/[^a-zA-Z0-9_]/', '', $k);
            if ( strlen($ds_name) >= 19 ) {
                $ds_name = substr($ds_name,0,19);
                echo( $k . " exceeds 19 characters, renaming to " . $ds_name . "\n");
            }
            if ($ds_name != $k) {
                // ds_name has changed. check if ds_name is already in the array
                echo("ds_name = " . $ds_name . "\n");
                while(isset($perf[$ds_name])){
                    echo($ds_name . " isset\n");
                    for( $i = 0; $i<2; $i++ ){
                        echo("i = " . $i . "\n");
                        $ds_name = substr($ds_name,0,18) . $i;
                        if (!isset($perf[$ds_name])){
                            echo("setting\n");
                            $perf[$ds_name] = $v;
                            unset($perf[$k]);
                        }
                    }
                }
            }
        }

print_r($perf);

?>