posix_mknod
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
posix_mknod — Create a special or ordinary file (POSIX.1)
Description
string
$filename
,int
$flags
,int
$major
= 0,int
$minor
= 0): bool
Creates a special or ordinary file.
Parameters
-
filename
-
The file to create
-
flags
-
This parameter is constructed by a bitwise OR between file type (one of the following constants:
POSIX_S_IFREG
,POSIX_S_IFCHR
,POSIX_S_IFBLK
,POSIX_S_IFIFO
orPOSIX_S_IFSOCK
) and permissions. -
major
-
The major device kernel identifier (required to pass when using
S_IFCHR
orS_IFBLK
). -
minor
-
The minor device kernel identifier.
Return Values
Returns true
on success or false
on failure.
Examples
Example #1 A posix_mknod() example
<?php
$file = '/tmp/tmpfile'; // file name
$type = POSIX_S_IFBLK; // file type
$permissions = 0777; // octal
$major = 1;
$minor = 8; // /dev/random
if (!posix_mknod($file, $type | $permissions, $major, $minor)) {
die('Error ' . posix_get_last_error() . ': ' . posix_strerror(posix_get_last_error()));
}
?>