## Example

`

     resource eio_sync_file_range ( int $fd , int $offset , int $nbytes , int $flags [, int $pri = EIO_PRI_DEFAULT [, mixed $callback = NULL [, mixed $data = NULL ]]] )

`

## Description

eio_sync_file_range() permits fine control when synchronizing the open file referred to by the file descriptor fd with disk.

## Return Values

eio_sync_file_range() returns request resource on success or FALSE on error.