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# php_uname

(PHP 4 >= 4.0.2)

php_uname -- Returns information about the operating system PHP was built on

## Description

``string php_uname` (void)`

php_uname() returns a string with a description of the operating system PHP is built on.

Example 1. php_uname() Example
    if (substr(php_uname(), 0, 7) == "Windows") {
      die("Sorry, this script doesn't run on Windows.\n");
    }

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