PHP用回车换行写CSV文件

Question

我正在尝试使用php将用Javascript编写的数组写入带有回车符和换行符分隔行的csv文件。下面的代码将csv文件写入，但是全部写在一行上。谁能告诉我如何更改它以在每行之间包含回车符/换行符分隔符？谢谢

def serviceMyRequest(request: Request): IO[ServiceResult] = ...

def myAction = Action { request =>
  val ioServiceResult = for {
    _ <- IO.shift(myCustomExecutionContext)
    serviceResult <- serviceMyRequest(request)
    _ <- IO.shift(defaultExecutionContext)
  } yield {
    serviceResult
  }
  handleServiceResult(ioServiceResult.unsafeRunSync())
}