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posix_uname — Get system information in array form (POSIX.1, 4.4.1).


array posix_uname(void)


An array of system information, or FALSE on error.


This function retrieves information about the system upon which PHP is currently executing. This information is returned as an associative array containing the following elements:

  • sysname: Operating system kernel name (e.g.Linux)

  • nodename: System hostname

  • release: Operating system kernel release string (e.g.2.2.14)

  • version: Operating system kernel version string (e.g.#4 Wed May 17 17:48:12 PDT 2000)

  • machine: Processor architecture (e.g.i586)


PHP 3.0.10+, PHP 4.0b4+


Example 1092. Getting system information in an array

if (FALSE === ($uname = posix_uname())) {
    echo "Could not get system information.\n";
} else {
    echo "System information:\n";

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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