<?php
class Singleton
{
private static $example;
private $count = 0;
private function __construct()
{
}
public static function single()
{
return !isset(self::$example) ? self::$example = new self() : self::$example;
}
public function up()
{
return $this->count++;
}
private function __clone()
{
}
}
$sin = Singleton::single();
echo $sin->up();
echo $sin->up();
$sin1 = Singleton::single();
echo $sin1->up();
echo $sin1->up();
