dio_open
(PHP 4 >= 4.2.0, PHP 5 <= 5.0.5)
dio_open —
Opens a new filename with specified permissions of flags and
creation permissions of mode
Description
resource dio_open
( string $filename
, int $flags
[, int $mode
] )
Parameters
-
filename
-
The opened file.
-
flags
-
The flags
parameter can also include any
combination of the following flags:
-
O_CREAT - creates the file, if it doesn't
already exist.
-
O_EXCL - if both, O_CREAT
and O_EXCL are set, dio_open()
fails, if the file already exists.
-
O_TRUNC - if the file exists, and its opened
for write access, the file will be truncated to zero length.
-
O_APPEND - write operations write data at the
end of the file.
-
O_NONBLOCK - sets non blocking mode.
-
mode
-
If flags
is O_CREAT,
mode
will set the mode of the file
(creation permissions).
-
O_RDONLY - opens the file for read access.
-
O_WRONLY - opens the file for write access.
-
O_RDWR - opens the file for both reading and
writing.
Return Values
A file descriptor or FALSE on error.
Examples
Example #1 Opening a file descriptor
<?php
$fd = dio_open('/dev/ttyS0', O_RDWR | O_NOCTTY | O_NONBLOCK);
dio_close($fd);
?>
