摘要：<?php final class Test { private static $instance = null; private function __construct() { return 'is ok'; } private function&n
<?php
final class Test
{
private static $instance = null;
private function __construct()
{
return 'is ok';
}
private function __clone(){}
public static function getSingleton()
{
if(is_null(self::$instance))
{
self::$instance = new self();
}
return self::$instance;
}
}
$test = test::getSingleton();
$test1 = test::getSingleton();
var_dump($test);
var_dump($test1);php单例模式案例
批改老师：天蓬老师批改时间：2019-01-01 19:51:15
老师总结：任何一种语言,都会有一个单例模式, 非常重要,也很常用,一定要记住
