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Accurately determine the type of OS PHP is running on

I need to determine the type of OS the PHP server is running on. By type, I mean strings like "windows" or "linux", not "wince", "winnt" etc.

So far, I have to leads: PHP_OS and uname(), the later being more re开发者_高级运维liable than the earlier (PHP_OS says what OS PHP was built on - according to documentation).


It's important to know that no non-Windows OS string is going to contain the text "win", and no non-OSX OS string is going to contain the word "darwin", and so on. Detecting the OS is easy.

$uname = strtolower(php_uname());
if (strpos($uname, "darwin") !== false) {
    // It's OSX
} else if (strpos($uname, "win") !== false) {
    // It's windows
} else if (strpos($uname, "linux") !== false) {
    // It's Linux
} else {
    // It's something your script won't run on
}
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