csu3_am335x/EVSE/GPL/php-8.1.12/tests/classes/singleton_001.phpt

--TEST--
ZE2 singleton
--FILE--
<?php

class Counter {
    private $counter = 0;

    function increment_and_print() {
        echo ++$this->counter;
        echo "\n";
    }
}


class SingletonCounter {
    private static $m_instance = NULL;

    static function Instance() {
        if (self::$m_instance == NULL) {
            self::$m_instance = new Counter();
        }
        return self::$m_instance;
    }
}

SingletonCounter::Instance()->increment_and_print();
SingletonCounter::Instance()->increment_and_print();
SingletonCounter::Instance()->increment_and_print();

?>
--EXPECT--
1
2
3