php static properties and methods

Question

define as follows

class Timer{
    private static $timeRemaining;
    private static $timeLimit;
    private static $nextTime;

    static function block();
    static function updateCookies();
}

when going around between webpages, how long do those static properties and methods live? As a result, which one is better, using the class above or a singleton object?

Answer 1

They live as much as PHP executes a code - while request lives.

And of course, between webpages all data is erased. But you can use session and manually assign data to static variables or non-static instance variables.

Singletons use a static variable as a storage of instance.