Doctrine\DBAL\Driver\Mysqli\MysqliStatement::__construct PHP Method

    public function __construct(\mysqli $conn, $prepareString)
    {
        $this->_conn = $conn;
        $this->_stmt = $conn->prepare($prepareString);
        if (false === $this->_stmt) {
            throw new MysqliException($this->_conn->error, $this->_conn->sqlstate, $this->_conn->errno);
        }
        $paramCount = $this->_stmt->param_count;
        if (0 < $paramCount) {
            $this->types = str_repeat('s', $paramCount);
            $this->_bindedValues = array_fill(1, $paramCount, null);
        }
    }