php - Call my function instead anonymous function -

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i have anonymous function running in onconnect event. how call function onconnect() instead anonymous function ? 

$this->server->on("connect", function (websockettransportinterface $user) {             $this->logger->notice((" connected " . $user->getip()));         });

and 

public function onconnect(websockettransportinterface $user) {     $this->logger->notice((" connected " . $user->getip()));      }

something 

 $this->server->on("connect", onconnect($user));

just this

$this->server->on("connect", 'onconnect');

and if in same class, this:

$this->server->on("connect", array($this, 'onconnect'));

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