Re: How do I access the value of PHP_OS?

[Luis Moreira <luis.moreira@xxxxxxxxxxxxxxx>]

David Scott wrote:

> In the PHP on Windows chapter of Programming PHP, there is mention of 
> a constant, PHP_OS, that can be used to determine the OS running the 
> server that PHP is on.
>
> The example code is as follows,
>
> <?php
>  if (PHP_OS == "WIN32" || PHP_OS == "WINNT") {
>    define("INCLUDE_DIR","c:\\myapps");
>  } else {
>    // some other platform
>    define("INCLUDE_DIR", "/include");
>  }
> ?>
>
> However, rather than checking this value, I'd like to see if flat out. 
> I tried this,
>
> <?php
>      echo "PHP_OS";
> ?>
>
> But it didn't work. How can I see the value contained in this constant?
There is a lot of confusion on your head.
That, and you didn't read the whole thing...
The example MUST include the setting of a variable first, named PHP_OS 
(or better $PHP_OS), and then proceed to the part you show.

If you write
   echo "PHP_OS";
you are echoing a string, not the contents of a variable.

If you do
    if (PHP_OS == "WIN32" || PHP_OS == "WINNT") {
you are doing nothing, since PHP_OS is not a variable. It must be 
preceded by a dollar sign.



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