think\process\pipes\Windows::readAndWrite PHP Метод

    public function readAndWrite($blocking, $close = false)
    {
        $this->write($blocking, $close);
        $read = [];
        $fh = $this->fileHandles;
        foreach ($fh as $type => $fileHandle) {
            if (0 !== fseek($fileHandle, $this->readBytes[$type])) {
                continue;
            }
            $data = '';
            $dataread = null;
            while (!feof($fileHandle)) {
                if (false !== ($dataread = fread($fileHandle, self::CHUNK_SIZE))) {
                    $data .= $dataread;
                }
            }
            if (0 < ($length = strlen($data))) {
                $this->readBytes[$type] += $length;
                $read[$type] = $data;
            }
            if (false === $dataread || true === $close && feof($fileHandle) && '' === $data) {
                fclose($this->fileHandles[$type]);
                unset($this->fileHandles[$type]);
            }
        }
        return $read;
    }