php_uname

(PHP 4 >= 4.0.2, PHP 5, PHP 7, PHP 8)

php_uname — Returns information about the system running PHP

explain

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

php_uname() The description of the operating system running PHP is returned. This and phpinfo() The top output is the same string. If you only want to get the name of the operating system. Consider using constants PHP_OS , but please note that this constant will include the PHP build（ built ）The name of the operating system when.

On some old UNIX platforms, it may not be able to detect the information of the current system, and then it will revert to the system information when building PHP. This only happens when your uname() function library does not exist or cannot be run.

parameter

mode

mode It is a single character used to define what information to return:

'a' : This is the default. Returns a separate mode separated by spaces 's' , 'n' , 'r' , 'v' , 'm' Same information.
's' : Operating system name. For example: FreeBSD 。
'n' : hostname. For example: localhost.example.com 。
'r' : Version name, for example: 5.1.2-RELEASE 。
'v' : Version information. Operating systems are very different.
'm' : Machine type. For example: i386 。

Return value

Returns the description string.

Update log

edition	explain
8.4.0	When specified `mode` Throw when invalid ValueError 。

Example

Example # 1 Some php_uname() Example

 <?php
 echo php_uname ();
 echo PHP_OS ;

 /*For example, some will output:
 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 , zero , three )) === 'WIN' ) {
 echo 'This is a server using Windows!' ;
 } else {
 echo 'This is a server not using Windows!' ;
 }

 ?>

It is also convenient to use some related PHP predefined constants , for example:

Example # 2 Examples of some system related constants

 <?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 ; // ;
 ?>

See

phpversion() -Get the current PHP version
php_sapi_name() -Returns the interface type between the web server and PHP
phpinfo() -Output information about PHP configuration

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Notes contributed by users 1 note

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seven

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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