Get system name

# posix_uname

(PHP 4, PHP 5, PHP 7, PHP 8)

posix_uname — Get system name

### Description

posix_uname(): array|false

Gets information about the system.

Posix requires that assumptions must not be made about the format of the values, e.g. the assumption that a release may contain three digits or anything else returned by this function.

### Parameters

This function has no parameters.

### Return Values

Returns a hash of strings with information about the system. The indices of the hash are

- sysname - operating system name (e.g. Linux)
- nodename - system name (e.g. valiant)
- release - operating system release (e.g. 2.2.10)
- version - operating system version (e.g. #4 Tue Jul 20 17:01:36 MEST 1999)
- machine - system architecture (e.g. i586)
- domainname - DNS domainname (e.g. example.com)

domainname is a GNU extension and not part of POSIX.1, so this field is only available on GNU systems or when using the GNU libc.

The function returns `false` on failure.

### Examples

Example #1 Example use of posix_uname()

`<?php
$uname=posix_uname();
print_r($uname);
?>`

The above example will output something similar to:

    Array
    (
        [sysname] => Linux
        [nodename] => funbox
        [release] => 2.6.20-15-server
        [version] => #2 SMP Sun Apr 15 07:41:34 UTC 2007
        [machine] => i686
    )

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