php_uname

Returns information about the operating system PHP is running on (PHP 4 >= 4.0.2, PHP 5)
string php_uname ( [string mode] )

Example 1850. Some php_uname() examples

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<?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!';

}

?>

Example 1851. A few OS related constant examples

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<?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;      // ;
?>

Code Examples / Notes » php_uname

tac

In php 4.1.2, php_uname('n') returns a warning about an invalid parameter count. Change it to @php_uname to hide this warning.

michiel1978 /*at*/ hotmail /*dot*/ com

Example 1 in this article is a little bit misleading. The comment on the last block of code says it will output the server's operating system, but in reality (and according to this same article), it will output the operating system on which PHP was built, because it uses the constant PHP_OS.

simon

Contrary to the last note, PHP_OS does display the OS PHP runs on currently, whereas php_uname() displays the Operating system version via uname. This has nothing to do with the system PHP was built on.

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