org\bovigo\vfs\vfsStreamWrapper::stream_open PHP Метод

    public function stream_open($path, $mode, $options, $opened_path)
    {
        $extended = strstr($mode, '+') !== false ? true : false;
        $mode = str_replace(array('t', 'b', '+'), '', $mode);
        if (in_array($mode, array('r', 'w', 'a', 'x', 'c')) === false) {
            if (($options & STREAM_REPORT_ERRORS) === STREAM_REPORT_ERRORS) {
                trigger_error('Illegal mode ' . $mode . ', use r, w, a, x  or c, flavoured with t, b and/or +', E_USER_WARNING);
            }
            return false;
        }
        $this->mode = $this->calculateMode($mode, $extended);
        $path = $this->resolvePath(vfsStream::path($path));
        $this->content = $this->getContentOfType($path, vfsStreamContent::TYPE_FILE);
        if (null !== $this->content) {
            if (self::WRITE === $mode) {
                if (($options & STREAM_REPORT_ERRORS) === STREAM_REPORT_ERRORS) {
                    trigger_error('File ' . $path . ' already exists, can not open with mode x', E_USER_WARNING);
                }
                return false;
            }
            if ((self::TRUNCATE === $mode || self::APPEND === $mode) && $this->content->isWritable(vfsStream::getCurrentUser(), vfsStream::getCurrentGroup()) === false) {
                return false;
            }
            if (self::TRUNCATE === $mode) {
                $this->content->openWithTruncate();
            } elseif (self::APPEND === $mode) {
                $this->content->openForAppend();
            } else {
                if (!$this->content->isReadable(vfsStream::getCurrentUser(), vfsStream::getCurrentGroup())) {
                    if (($options & STREAM_REPORT_ERRORS) === STREAM_REPORT_ERRORS) {
                        trigger_error('Permission denied', E_USER_WARNING);
                    }
                    return false;
                }
                $this->content->open();
            }
            return true;
        }
        $content = $this->createFile($path, $mode, $options);
        if (false === $content) {
            return false;
        }
        $this->content = $content;
        return true;
    }