(PECL swoole >= 1.9.0)
swoole_async_writefile — Write data to a file asynchronously
$filename
, string $content
, callable $callback = ?
, int $flags = 0
) : bool
filenameThe filename being written.
contentThe content writing to the file.
callback
flags
成功时返回 true， 或者在失败时返回 false。