[SOLVED] small question about functions

[xiao]

Do you have to send POST and SESSION variables to functions?

Like:

function something($postvar,$sessionvar){
     echo $postvar . " " . $sessionvar;
}

 

Or can a function read those anyway, like this?

function something(){
     echo $_POST['var1'] . " " . $_SESSION['var2'];
}

[p2grace]

$_SESSION variables you can read inside the function, I believe you have to send $_POST vars through as parameters.

[rhodesa]

All 'magic variables' like $_POST, $_SESSION, $_GET, and $_SERVER are automatically global and can be access directly from inside functions.

[xiao]

ok, thanks

[Barand]

$_POST, $_GET, etc are superglobals and are available anywhere, even inside functions.

 

However, it is better to write functions with arguments - it makes them more re-usable.

 

With your first function you could

something ('foo', 'bar');   // --> foo bar

 

but your second is limited to only those post and session values.