posix_mkfifo
posix_setegid
POSIX Functions
PHP Manual

# posix_mknod

Create a special or ordinary file (POSIX.1)

### Description

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

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

- posix_mkfifo