BaseController.class.php

<?php
namespace Common\Controller;
use Think\Controller;

class BaseController extends Controller
{
	public function _initialize()
	{
        $datas['logo']          = $this->apiBaseCache('pc_logo_set'); // logo
        $datas['bottom_qrcode'] = $this->apiBaseCache('pc_bottom_qrcode'); // 底部二维码
        $datas['hot_goods']     = $this->apiBaseCache('pc_hot_goods', '', 5); // 热门商品

        foreach ($datas as $k => $v) {
            $this->assign($k, $v['data']);
        }
	}

	/**
     * 通过bcat_id获取CMS分类数据 --- 图片、文字等
     * @param  [type] $tags  [标签]
     * @param  [type] $where [搜索条件，用&连接，如：a=1&b=2]
     * @param  [type] $limit [数量]
     * @return [type]        [description]
     */
    public function apiBaseCache($tags, $where='', $limit=1)
    {
        $cms = D('Home/Scms');
        $datas = $cms->getBaseList($tags, $where, $limit);

        if (!empty($datas)) {
            return $this->apiReturn(0, '', $datas);
        } else {
            return $this->apiReturn(7004, '未找到数据');
        }
    } 

	/**
     * 统一格式返回
     * @param  integer $code   [description]
     * @param  string  $msg    [description]
     * @param  array   $extend [description]
     * @return [type]          [description]
     */
    protected function apiReturn($code = 0, $msg = '', $extend = array())
    {
        $data = array(
            'err_code' => $code,
            'err_msg' => $msg,
            'data' => $extend,
        );
        if(isset($_GET['callback']) && !empty($_GET['callback'])){
            echo  $_GET['callback'].'('.json_encode($data).')';exit;
        }else{
            return $data;exit;
        }
    }

    // 校验接口
    protected function checkApi($request)
    {
        $timestamp = I('request.timestamp', '');
        $random    = I('request.random', '');
        $signature = I('request.signature', '');

        if (!$timestamp && !$random && !$signature) return false;

        if ($timestamp < time() - 300) return false;

        $sign = createSignature($timestamp, $random);

        if ($signature != $sign) return false; 

        return true;
    }


}