php man page for dio_read

DIO_READ(3)								 1							       DIO_READ(3)

dio_read - Reads bytes from a file descriptor

SYNOPSIS
       string dio_read (resource  $fd, [int  $len = 1024])

DESCRIPTION
	The function dio_read(3) reads and returns $len bytes from file with descriptor $fd.

PARAMETERS
	      o $fd
		- The file descriptor returned by dio_open(3).

	      o $len
		- The number of bytes to read. If not specified, dio_read(3) reads 1K sized block.

RETURN VALUES
	The bytes read from $fd.

SEE ALSO
       dio_write(3).

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