posix_mknod

(PHP 5 >= 5.1.0, PHP 7)

posix_mknod — Create a special or ordinary file (POSIX.1)

Description

posix_mknod ( string $pathname , int $mode [, int $major = 0 [, int $minor = 0 ]] ) : bool

Creates a special or ordinary file.

Parameters

pathname

The file to create

mode

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 or POSIX_S_IFSOCK) and permissions.

major

The major device kernel identifier (required to pass when using S_IFCHR or S_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()));
}

?>

See Also