<?php
 
class Test
{
    private static $link;
    public $statement = "SELECT * FROM table";
 
    public function Test()
    {
        $this->link = new mysqli("127.0.0.1", "username", "password", "database", "port");
    }
    public function poll()
    {
        $query = $this->link->query(self::statement);
        while( $row = $query->fetch_assoc() )
        {
            $rows[] = $row;
        }
        return $rows;
    }
 
 
}