单例-Singleton

单例模式的作用就是保证在整个应用程序的生命周期中,任何一个时刻,
单例类的实例都只存在一个,同时这个类还必须提供一个访问该类的全局访问点。

常见使用实例:数据库连接器;日志记录器(如果有多种用途使用多例模式);锁定文件。

code

singletonTrait.php

<?php

/**
 * Trait singletonTrait
 */

namespace singleton;

trait singletonTrait
{
    /**
     * @var static
     */
    protected static $instance = null;


    /**
     * MTool_SingletonTrait constructor.
     */
    private function __construct()
    {

    }

    /**
     *  防止被克隆
     */
    private function __clone()
    {

    }

    /**
     *  防止被反序列化
     */
    private function __wakeup()
    {

    }

    /**
     * @return static Singleton
     */
    final public static function instance()
    {
        if (static::$instance === null) {
            self::$instance = new self();
        }
        return self::$instance;
    }
}

api.php

<?php
namespace singleton;

include_once('./singletonTrait.php');
/**
 * Class Api
 * @package singleton
 */
class api
{
    use singletonTrait;

    public function __construct()
    {

    }

    public function test()
    {
        echo 'test' . PHP_EOL;
    }
}


echo api::instance()->test();

523 对 “Less Design Patterns”的想法;

  1. Governor of Poker is an exciting poker game for Mac. Copy and paste the HTML below into your website to make the above widget appear Governor of Poker 3 2 3Governor of Poker 3 3 3App specsLicenseFree Rate: Governor of Poker Have you tried Governor of Poker? Be the first to leave your opinion! governor-of-poker-2-premium-v3.0.6-mod.apk Have you tried Governor of Poker Download? Be the first to leave your opinion! HomePC & MacGovernor of Poker July 2010 (updated November 2017) Those looking for straight-up, no-frills Texas Hold ‘Em can find it in Governor of Poker. Those looking for engaging goals and atmosphere, however, likely will not; the constant tug-of-war on the tables to build the funds to buy the next non-interactive building feels more like a chore than a real accomplishment. It’s only worth looking at if you’re heavily invested in the technical play of cards or, you know, like buying non-interactive buildings as a baseless figure of status.
    https://tempovideo.com/community/profile/danibleasdale0
    PokerStars casino UK offers slots, blackjack, roulette and a few other table games. Some of the most popular PokerStars casino games include Eye of Horus, Double Ball Roulette, Caribbean Stud, Buffalo Blitz and more. All of them have been tested for fairness by independent organisations. Leading online cardroom PokerStars said the $18,603,200 prize pool in this week’s “Sunday Million” tournament was the biggest for any tournament in company history. Nearly 61,000 players combined to create a record 93,016 entries in the $215 buy-in tournament. An international online poker tournament held this week shattered a record for entries and generated an $18.6 million prize pool, making it one of the largest online tournaments ever. Teams The most players can hope for are interstate gambling compacts where states agree that sites can share player pools. This has happened in New Jersey, Nevada and Delaware, but PokerStars has yet to share player pools in New Jersey and Pennsylvania, the only two sites where it operates. This doesn’t seem promising for a national site, but luckily there are sites similar to PokerStars that already accept players from all 50 states. Offshore sites like Americas Cardroom and Ignition Poker accept players from all 50 states and have large players pools, tournaments and a numerous cash games that are reminiscent of the old PokerStars day. So if you’re looking for a good alternative, we recommend one of those two sites.

  2. Bei mycasino finden Sie die besten Slots der weltweit beliebtesten Spielehersteller wie Microgaming, NetEnt, Evolution Gaming, Red Tiger, Greentube, iSoftBet und Play’nGO sowie exklusive Eigenentwicklungen. Dazu zählt auch unser Slot Golden Rabbit, den wir in Kooperation mit dem Spielehersteller Paf entwickelt haben. Dieser ist nur einer von vielen Spielautomaten, die Sie nur bei «mycasino – Mein Schweizer Online-Casino» finden. Boni und Aktionen gehören sicherlich zu den wichtigsten Aspekten bei der Wahl eines Online Casinos. Daher legen wir von GGBet besonders großen Wert darauf, unseren neuen Spielern ein attraktives Angebot zu präsentieren, das ihnen den optimalen Einstieg in das Casino Abenteuer ermöglicht. Wir meinen, dass unser GGBet Casino Bonus unseren neuen Gästen einen optimalen Start bietet, den Sie sicher nicht so schnell in einem Online Casino in Deutschland finden werden.
    http://misojin.co/bbs/board.php?bo_table=free&wr_id=54337
    Das Ziel im Poker ist es, die Einsätze der anderen Spielern (Chips, Geld etc.) zu gewinnen. Da bei sämtlichen Pokervarianten (siehe weiter unten) nie alle Spielkarten ausgeteilt werden, ist jede Runde des gesamten Spiels gleichermaßen spannend und unvorhersehbar. In Varianten wie Draw und Stud Poker ist es dagegen möglich, dass zwei oder mehr Spieler einen Royal Flush bekommen. Auch in diesem Fall würde der Pot geteilt. Flush Herz, Ass hoch. Poker gilt als eines der beliebtesten und bekanntesten Kartenspiele der Welt und wird in Spielkasinos, professionell bei Turnieren oder auch gerne privat zu Hause gespielt. In Deutschland gilt Poker rechtlich gesehen als Glücksspiel. In Casinos gibt es auch Spielvarianten, in welchen die Spieler nicht alle gegeneinander spielen, sondern jeweils einzeln gegen das Haus. Grundsätzlich sind die Poker-Spielregeln einfach zu erlernen. Jedoch gehört einiges Wissen und viel Übung dazu, dieses Spiel zu meistern.

  3. Rekisteröidy>> Unohtui? Pokerihuone : Bonus 10€ + 200€ bonus Rekisteröidy>> The Puff Puff Pass grinder has slab cuts on the top and bottom of the grinder to provide you with a much better grip while you are grinding up your favorite herb. It is available in the following strains, each with their own design and color: Blue Dream, Granddaddy Purple, Gorilla Glue #4, Girl Scout Cookies, Sour Diesel, OG Kush, Pink Kush and White Widow. Pick your favorite one in the drop down menu when you place your order. The sharp and powerful wavy teeth will grind up your herbs with great ease, even a larger bud, while the pollen screen and kief catcher will filter and collect all the lovely bits that you can scrape out with the included spatula and save for re-use.
    https://www.bookmark-suggest.win/kasinosivustot
    Tilivapaat nettikasinot eivät ole historiansa missään vaiheessa olleet erityisen hyviä bonuskasinoita. Talletusbonuksia ja ilmaiskierroksia irtoaa hieman enemmän kuin aikaisemmin, mutta sankkaan joukkoon mahtuu yhä paljon totaalikieltäytyjiä. Päivitetty: 8 . helmikuuta 2022 klo 17:10 Tarjontaa nettikasinoista on paljon, sillä kilpailu alalla on kovaa. Yksinkertaisesti parasta ja tunnetuinta vaihtoehtoa on mahdotonta sanoa suoralta kädeltä, mutta kaikki ETA-alueella toimivat kasinot ovat suomalaisille verovapaita. Sivustoltamme löydät listattuna verovapaita nettikasinoita arvosteluineen, jotta voit tehdä informoidun päätöksen. Listan kolmen kärkeä pitävät Vauhti Casino, William Hill ja Ultra Casino. Muita tunnettuja verovapaita kasinoita ovat esimerkiksi Unibet, Pikakasino ja Pelataan.

  4. Play MR Vegas 2 Big Money Tower Slot for Free with 20 No Deposit Chips Mr. Vegas 2 Slot is a thrilling online game that transports players to the glitz… This varies from casino to casino and the bonus conditions in place. In case the free spins bonus is allocated to new players during registration, the casino only credits new players after the registration process is complete. On the other hand, should it be allocated to a player after a first deposit, free spins are available after funds are deposited. Bonuses are credited immediately to a player after the conditions are met. This means that there are casinos that offer one-time bonuses, whereas others allow you to claim multiple times. It is important to check the terms and conditions before choosing the site.
    https://www.selfdoctorcafe.com/bbs/board.php?bo_table=free&wr_id=110456
    The term “free spin” refers only to slot machines, as only they of all casino games have reels. Bonuses in the form of free spins of slot reels appeared thanks to the bonus function in the slot machines themselves. This function is one of the most popular, it is implemented by many providers of gaming software in the vast majority of slots. The mechanics of the function is that by knocking out a certain number of specified symbols, players can spin the reels of slots a number of times for free to get additional winnings without spending their money. Usually just once as part of a specific online casinos’ sign up process. Reload bonuses and other free spins offers can be claimed multiple times but no deposit ones will usually only be offered once. There’s no reason why a Canadian player can’t open a number of casino accounts with Canadian friendly sites in order to enjoy lots of no deposit bonuses however we would advise responsible gambling practices at all times. Have a look around for the best offers from reliable Canadian online casinos and claim those instead of creating multiple accounts at one website just to get more free spins no deposit bonuses!

  5. Быстровозводимые строения – это новейшие системы, которые различаются повышенной быстротой возведения и гибкостью. Они представляют собой постройки, состоящие из предварительно произведенных компонентов или узлов, которые способны быть быстрыми темпами собраны на территории развития.
    Здания из металлоконструкций и сэндвич панелей владеют податливостью а также адаптируемостью, что дает возможность легко изменять а также адаптировать их в соответствии с интересами покупателя. Это экономически продуктивное и экологически долговечное решение, которое в последние лета заполучило маштабное распространение.

发表回复

您的电子邮箱地址不会被公开。