gastrodata/Setting.class.php

<?php

require_once("Connection.class.php");

class Setting {
    private $connection = null;
    private $settingKey = "";

    public function __construct($setting_key)
    {
        $this->connection = new Connection();
        $this->settingKey = $this->connection->escape($setting_key);
    }

    public function get($default="")
    {
        $query = "SELECT `setting_value` FROM `settings` WHERE `setting_key` = '" . $this->settingKey . "';";
        $result = $this->connection->query($query);
        if ($result->num_rows == 1) {
            return $result->fetch_assoc()["setting_key"];
         } else {
             if (!empty($default)) {
                 return $default;
             }
            return false;
         }
    }

    public function set($value)
    {
        $escaped_value = $this->connection->escape($value);

        if ($this->get()) {
            $query = "UPDATE `settings` SET `setting_value` = '" . $escaped_value . "' WHERE `setting_key` = '" . $this->settingKey . "';";
        } else {
            $query = "INSERT INTO `settings` (`setting_key`, `setting_value`) VALUES ('". $this->settingKey . "', '" . $escaped_value . "');";
        }

        if (!$this->connection->query($query)) {
            return false;
        }

        return true;
    }
}