php_uname

(PHP 4 >= 4.0.2, PHP 5, PHP 7)

php_uname — Returns information about the operating system PHP is running on

Descrierea

php_uname ( string $mode = "a" ) : string

php_uname() returns a description of the operating system PHP is running on. This is the same string you see at the very top of the phpinfo() output. For the name of just the operating system, consider using the PHP_OS constant, but keep in mind this constant will contain the operating system PHP was built on.

On some older UNIX platforms, it may not be able to determine the current OS information in which case it will revert to displaying the OS PHP was built on. This will only happen if your uname() library call either doesn't exist or doesn't work.

Parametri

mode

mode is a single character that defines what information is returned:

'a': This is the default. Contains all modes in the sequence "s n r v m".
's': Operating system name. eg. FreeBSD.
'n': Host name. eg. localhost.example.com.
'r': Release name. eg. 5.1.2-RELEASE.
'v': Version information. Varies a lot between operating systems.
'm': Machine type. eg. i386.

Valorile întoarse

Returns the description, as a string.

Exemple

Example #1 Some php_uname() examples


<?php
echo php_uname();
echo PHP_OS;

/* Some possible outputs:
Linux localhost 2.4.21-0.13mdk #1 Fri Mar 14 15:08:06 EST 2003 i686
Linux

FreeBSD localhost 3.2-RELEASE #15: Mon Dec 17 08:46:02 GMT 2001
FreeBSD

Windows NT XN1 5.1 build 2600
WINNT
*/

if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
    echo 'This is a server using Windows!';
} else {
    echo 'This is a server not using Windows!';
}

?>

There are also some related Predefined PHP constants that may come in handy, for example:

Example #2 A few OS related constant examples


<?php
// *nix
echo DIRECTORY_SEPARATOR; // /
echo PHP_SHLIB_SUFFIX;    // so
echo PATH_SEPARATOR;      // :

// Win*
echo DIRECTORY_SEPARATOR; // \
echo PHP_SHLIB_SUFFIX;    // dll
echo PATH_SEPARATOR;      // ;
?>

A se vedea și

phpversion() - Gets the current PHP version
php_sapi_name() - Returns the type of interface between web server and PHP
phpinfo() - Outputs information about PHP's configuration

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User Contributed Notes 4 notes

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Grzechooo+php at gmail dot com ¶

12 years ago


Note that PHP won't tell you that it reverted to displaying platform it was built on.

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pyst ¶

4 years ago


Note that the argument is not a "format". This means that <?php uname('a') ?> is not equivalent to <?php uname('s n r v m') ?>, but rather <?php uname('s') . ' ' . uname('n') . ' ' . uname('r') . ' ' . uname('v') . ' ' . uname('m') ?>.

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Ricardo Striquer (ricardophp yohoocombr) ¶

5 years ago


Although it does not indicate receiving parameters this function allows some chars as parameters, they are the options a; m; n; r; s; v.

I don't know exactly what each one does, but below is a code example and its output on PHP 5.5 running on RedHat 4.4

<?php 
echo '<pre>';
echo '(void): '.php_uname()."\n"; // output: "(void): Linux web989.uni5.net 4.4.180 #1 SMP Wed May 22 15:27:37 -03 2019 x86_64"
echo 'a: '.php_uname('a')."\n"; // output: "a: Linux web989.uni5.net 4.4.180 #1 SMP Wed May 22 15:27:37 -03 2019 x86_64"
echo 'm: '.php_uname('m')."\n"; // output: "m: x86_64"
echo 'n: '.php_uname('n')."\n"; // output: "n: web989.uni5.net"
echo 'r: '.php_uname('r')."\n"; // output: "r: 4.4.180"
echo 's: '.php_uname('s')."\n"; // output: "s: Linux"
echo 'v: '.php_uname('v')."\n"; // output: "v: #1 SMP Wed May 22 15:27:37 -03 2019"
// echo file_get_contents('/etc/issue')."\n";

echo '</pre>';
phpinfo();
?>

Note that I used file_get_contentes with a file, that file is present in most linux boxies and varies on content, but most of times it indicates kernel version, linux version, distribution and so on. In my case my user didn't have access to the file, so to identify that it was a red hat I paid attention to php_info outputs, there in the middle was the postgress driver description, p. eg indicating the distribution.

I guess there is no easy way to find out the server version programmatically a 100% of times, but by and large you can get around by yourself.

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Yzmir Ramirez ¶

13 years ago


Note that php_uname('n') does not always equal $_SERVER['HOST_NAME']

The machine that you are running the script may server many different host names so don't use this when building urls.

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