PHPDaemon\Clients\XMPP\XMPPRoster::isContact PHP Method

Discover if a contact exists in the roster via jid

public isContact ( string $jid ) : boolean
$jid	string
return	boolean

    public function isContact($jid)
    {
        return array_key_exists($jid, $this->roster_array);
    }

XMPPRoster