php单件模式实现代码示范

php单件模式实现代码演示

<?php
/**
 * @link https://github.com/MaGuowei
 * @copyright 2013 maguowei.com
 * @author Ma Guowei <imaguowei@gmail.com>
 */
 
/**
 * 单例模式
 * Class Single
 */
class Single
{
    private $name;
    private static $single;
 
    private function __construct()
    {
 
    }
 
    public static function init()
    {
        if(empty(self::$single))
        {
            self::$single = new Single();
        }
 
        return self::$single;
    }
 
    public function getName()
    {
        return $this->name;
    }
 
    public function setName($name)
    {
        $this->name = $name;
    }
 
}
 
$s = Single::init();
 
$s->setName('hhhh');
echo '$s:'.$s->getName();
 
unset($s);
 
$m = Single::init();
echo '$m:'.$m->getName();