xyzshop/helper/index_tab.php

<?php
/**
 * Created by PhpStorm.
 * User: stanley-king
 * Date: 2017/2/27
 * Time: 上午9:57
 */

function comp_tab($left,$right)
{
    $t_l = intval($left['sort']);
    $t_r = intval($right['sort']);

    if($t_l > $t_r) {
        return 1;
    } elseif($t_l == $t_r) {
        return 0;
    } else {
        return -1;
    }
}

class index_tab
{
    private static $stInstance = null;
    private $mTabs;
    const mb_home_tab_id = 123;

    public function __construct() {
        $this->mTabs = [];
    }

    public static function instance() {
        if(self::$stInstance == null) {
            self::$stInstance = new index_tab();
        }

        return self::$stInstance;
    }

    public function tabs()
    {
        if(StatesHelper::fetch_state('tags')) {
            $this->init();
        }
        return $this->mTabs;
    }

    private function init()
    {
        Log::record("init tags data.",Log::INFO);

        $this->mTabs = [];
        $mod_webcode = Model('web_code');
        $tabs = $mod_webcode->get_cache(self::mb_home_tab_id);
        if($tabs == null || empty($tabs)) {
            $tabs[] = ['special_id' => 0,'name' => '首页', 'sort' => 0];
        }

        uasort($tabs,'comp_tab');
        foreach ($tabs as $key => $val) {
            $this->mTabs[] = ['special_id' => $val['special_id'],'name' => $val['name']];
        }
    }
}