<?php

$array = snmpwalk_cache_oid($device, 'memoryUsageTable', null, 'ZYXEL-IES5000-MIB', 'zyxel', ['-LE 3', '-OQUs', '-Pu']);
if (is_array($array)) {
    echo 'IES5000: ';
    foreach ($array as $key => $value) {
        if (is_numeric($value['memoryCurValue'])) {
            $perc_warn = $value['memoryHighThresh'];
            $descr = $value['memoryDescr'];
            discover_mempool($valid_mempool, $device, $key, 'ies5000', $descr, null, null, null, $perc_warn);
        }
    }

    unset($array);
}
