// This is how I went through the json output to extract all the details.

public function ProsessIloData($arr, $IPv4Addr, $indent) {
    $Output = '';
        if ($arr) {
            foreach ($arr as $key => $value) {
            if (is_array($value)) {
                //
                ProsessIloData($value, $IPv4Addr, $indent . $key . '_');
            } else {
                //  Output
                $Output = $Output . "<br>Key: " . $indent . $key .  ' Value: ' . $value  . "<br>";
                // Remove the rem statment from the line below to show all the keys and the values.
                // echo "<br>Key: " . $key .  ' Value: ' . $value  . "<br>";

            // Create a new elseif statment for each key you want the value for.
            if($indent . $key == "AssetTag"){
                $AssetTag = '';
                $AssetTag = $value;
                Update_sql("`AssetTag`= '" . $AssetTag . "'", $IPv4Addr);
            }elseif($indent . $key == "BiosVersion"){
                $BiosVersion = '';
                $BiosVersion = $value;
                Update_sql("`BiosVersion`= '" . $BiosVersion . "'", $IPv4Addr);
            }
            }
        }
    }

}

// This is how I updated the database by using the IP as the WHERE
public function Update_sql($sql, $IPv4Addr){
    global $wpdb;
    $ilo_hardware_Table = $wpdb->prefix . 'ilo_hardware';
    $ilo_hardware_update_sql = "UPDATE " . $ilo_hardware_Table . " SET
                        " . $sql . "
                    WHERE `IP_Address` = '" . $IPv4Addr . "'";
    $wpdb->query($ilo_hardware_update_sql);
    if ($wpdb->last_error !== '') :

        $str = htmlspecialchars($wpdb->last_result, ENT_QUOTES);
        $query = htmlspecialchars($wpdb->last_query, ENT_QUOTES);

        print   "<div id='error'>
                            <p class='wpdberror'><strong>WordPress database error:</strong> [$str]<br />
                            <code>$query</code></p>
                        </div>";

    endif;
}