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<?php
if (!defined('WPVIVID_PLUGIN_DIR'))
{
    die;
}

class WPvivid_Snapshot_Option_Ex
{
    public $options_table;

public function __construct()
    {
        global $wpdb;
        $this->options_table =  $wpdb->base_prefix."wpvivid_options";
        //$this->check_tables();
    }

public function check_tables()
    {
        global $wpdb;

if($wpdb->get_var("SHOW TABLES LIKE '$this->options_table'") != $this->options_table)
        {
            $sql = "CREATE TABLE IF NOT EXISTS $this->options_table (
               `option_id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
               `option_name` varchar(191) NOT NULL DEFAULT '',
				`option_value` longtext NOT NULL,
				PRIMARY KEY (`option_id`),
				UNIQUE KEY `option_name` (`option_name`)
                );";

$wpdb->query($sql);
        }
    }

public function get_option($option_name)
    {
        global $wpdb;

if($wpdb->get_var("SHOW TABLES LIKE '$this->options_table'") != $this->options_table)
        {
            return false;
        }
        else
        {
            global $wpdb;

$query =$wpdb->prepare('select option_value from '.$this->options_table .' where option_name = %s', $option_name);

$result =$wpdb->get_var($query);
            if(empty($result))
            {
                return false;
            }
            else
            {
                return maybe_unserialize($result);
            }
        }
    }

public function update_option($option_name,$value)
    {
        global $wpdb;

if($this->is_exists_option($option_name))
        {
            $option_value = maybe_serialize($value);
            return $wpdb->update($this->options_table, compact('option_name', 'option_value'), compact('option_name'));
        }
        else
        {
            $option_value = maybe_serialize($value);
            return $wpdb->insert($this->options_table, compact('option_name', 'option_value'));
        }
    }

public function is_exists_option($option_name)
    {
        global $wpdb;

$query = $wpdb->prepare('select option_value from '.$this->options_table.' where option_name = %s', $option_name);
        $result =$wpdb->get_row($query);
        return !empty($result);
    }
}