get current instance of class in PHP

Question

how do i get access to a current instance of class that's already running in PHP?

in my one PHP class, I want to call a function from another that's already running as a server. so i cant create a new instance.

thanks.

p a

I don't understand, especially the part about running a class as a server. Can you show some code? — Pekka, Sep 16 '10 at 21:16
hi pekka the code is really complicated there's a lot of classes. but basically its a websocket server written in PHP that you can find here: http://github.com/nicokaiser/php-websocket. I am basically trying to call one of the functions in this server from the outside (for example, if a user clicks a button, call send data function inside the server). — p a, Sep 16 '10 at 21:33

score 3 · Answer 1 · edited May 23 '17 at 12:07

What you want is called a singleton.

With a Singleton you can have only one instance of your class running on the server.

To do so you must :

store your instance in your class as a static field
have a private constructor so you can't create instances yourself
have a static method which call the constructor once, and return the only instance

Resources :

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