(PHP 4 >= 4.2.0)
dio_read --
Reads n bytes from fd and returns them, if n is not specified,
reads 1k block
Description
string
dio_read ( resource fd [, int n])
The function dio_read() reads and returns
n bytes from file with descriptor
resource. If n is
not specified, dio_read() reads 1K sized block
and returns them.