data = []; } /** @var array */ private $data; function getString(bool $reset=true): string { $string = implode("", $this->data); if ($reset) $this->data = []; return $string; } function getResource() { return null; } function appendFilter(string $filterName, ?int $readWrite=null, $params=null): void { } function prependFilter(string $filterName, ?int $readWrite=null, $params=null): void { } function setEncodingFilter(string $to, string $from="utf-8"): void { } function _write(string $value): void { $this->data[] = $value; } function close(bool $close=true): void { } }