Changing global variables

[ahayes1ic]

Contrary to the PHP.net resources the following scenario does not seem to work.

$a = 1;
$b = 2;

function Sum()
{
    global $a, $b;

$b = $a + $b;
}

Sum();
echo $b;

php.net reports that this prints 3 but in actual fact it still prints 2.

Is there a method of accessing a function variable from outside the function or change a global variable from within a function?

[NogDog]

Prints 3 for me.

PS: You might want to add the following to the start of your script to see if maybe you misspelled a variable name or something:

<?php
ini_set('display_errors', 1);
error_reporting(E_ALL | E_STRICT);
// ...rest of script