php 单示例编程

<?php defined('SYSPATH') or die('No direct script access.');

class Kohana_BOTA
{
    //私有构造方法，防止再次实例化对象
    private function __construct(){}
    //私有克隆函数防止克隆
    private function __clone(){}

    private static $_instance = null;
    //private $_url;
    private $_maps = array(); //全库编号字段的值对应的文字翻译
    private static $_url = null; //各个系统URL值
    private static $_language = null; //全库编号字段的值对应的文字翻译
    private static $_config = null; //系统配置

    /**
     * 系统启动时候的全局类
     * 该全局类是 单例设计模式
     * @return BOTA_Core
     */
    public static function app()
    {
        if (self::$_instance instanceof self){
            return self::$_instance;
        }
        self::$_instance = new self();
        return self::$_instance;
    }

    private function _init()
    {
    }

    /**
     * 获取全库编号字段的值对应的文字翻译
     * @param null $type 编号所属类型
     * @author zengmeilong
     * @since 20180111
     * BOTA::app()->maps();
     * BOTA::app()->maps('card_type');
     */
    public function maps($type=null)
    {
        if (!$this->_maps)
        {
            $result = ORM::factory('Language')->find_all();

            $data = array();
            foreach($result as $k=>$v) {
                $data[$v->type][$v->key] = $v->as_array();
            }

            $this->_maps = $data;
        }

        if ($type !== null) {
            return Arr::get($this->_maps,$type,array());
        }

        return $this->_maps;
    }

    /**
     * 返回当前项目当前环境的URL前缀
     * 若指定包名，则返回包同级环境的URL前缀
     * BOTA::url();
     * BOTA::url('com.bota.mock');
     * BOTA::url('com.bota.mock', 5);
     * @param string $platform
     */
    public static function url($platform=CFG_ENAME, $plate=CFG_PLATE)
    {
        if (self::$_url === null){
            $pf = ORM::factory('Platform')->find_all();
            foreach ($pf as $v){
                self::$_url[$v->package] = $v->as_array();
            }
        }
        return isset(self::$_url[$platform]) ? self::$_url[$platform]['p'.$plate] : '';
        //return ORM::factory('Platform',array('package'=>$platform))->cached(3600)->get('p'.$plate);
    }

    /**
     * 获取全库编号字段的值对应的文字翻译
     * @param string $type 编号所属类型
     * @param string $key false返回数组|true返回键值对|int返回值
     * @param string $default 缺省值
     * @author bsykc
     * @since 20180927
     * BOTA::language();
     * BOTA::language('pay_status');
     * BOTA::language('pay_status', false);
     * BOTA::language('pay_status', 3, '');
     */
    public static function language($type=null, $key=false, $default=null)
    {
        if (self::$_language === null)
        {
            $orm = ORM::factory('Language')->find_all();
            foreach($orm as $k=>$v)
            {
                self::$_language[$v->type][$v->key] = $v->as_array();
            }
        }
        if ($type !== null and $key === false and isset(self::$_language[$type])) {
            $onlyvalue = array();
            foreach (self::$_language[$type] as $v){
                $onlyvalue[] = array('value'=>$v['key'], 'text'=>$v['value']);
            }
            return $onlyvalue;
        }
        if ($type !== null and $key === true and isset(self::$_language[$type])) {
            $result = array();
            foreach (self::$_language[$type] as $v){
                $result[$v['key']] = $v['value'];
            }
            return $result;
        }
        if ($type !== null and isset(self::$_language[$type][$key]['value'])) {
            return self::$_language[$type][$key]['value'];
        }
        return $default;
    }

    /**
     * 获取配置
     * @param string $key 键值对的键
     * @param mix $default 缺省值
     * @author bsykc
     * @since 20180917
     * BOTA::config('cfg_name');
     * BOTA::config('cfg_name', '');
     */
    public static function config($key, $default=null)
    {
        if (self::$_config === null){
            $result = ORM::factory('Config')->where('status','=',1)->find_all();
            foreach($result as $k=>$v) {
                self::$_config[$v->key] = $v->value;
            }
        }
        /*
        $cfg = Arr::get(self::$_config, $key, $default);
        //根据环境和包名替换配置里面的URL
        if (preg_match('/(^\{#com\.bota\.[a-z0-9]+#\})(.*)/', $cfg, $matchs) === 1){
            return self::url(trim($matchs[1], '{#}')) . $matchs[2];
        }
        return $cfg;
         */
        return Arr::get(self::$_config, $key, $default);
    }

}

调用：

BOTA::app()->maps('order_writeoff_status');

Arr::path(BOTA::app()->maps('order_writeoff_status'), '1.value');