<?php
if (!defined('BASEPATH'))exit('No direct script access allowed');
include_once(FCPATH . 'application/models/Base_model.php');
class System_config_model extends Base_model {
	protected $table = 'system_config';

	public function __construct() {
        parent::__construct();
    }

    // 获取系统信息
    public function get_system_config($key){
        if (empty($key)) {
            return '';
        }
        $data = $this->db->select('value')->where('key',$key)->get($this->table)->row_array();
        return $data['value'];
    }

    // 设置系统信息
    public function set_system_config($key,$value){
        if (empty($key) || empty($value)) {
            return '';
        }
        $num = $this->db->where('key',$key)->get($this->table)->num_rows();
        if (empty($num)) {
        	$this->db->insert($this->table,array('key'=>$key,'value'=>$value));
        }else{
        	$this->db->where('key',$key)->update($this->table,array('value'=>$value));
        }
        return;
    }
}
?>