global keyword and references
| From: | Philip X | Date: | Thu, 02 Aug 2001 14:55:52 +0000 |
| Subject: | global keyword and references | ||
| Groups: | php.general | ||
| Request: | Send a blank email to php-general+get-60916@lists.php.net to get a copy of this message | ||
Hi,
I'm having a problem using the global keyword and references.
To the best of my logic and PHP's documentation, the following code:
<?
$a = 1;
$b = 2;
function Sum() {
global $a, $b;
$b = &$a; // <- $b is for now 1
}
Sum();
echo "a=$a b=$b";
?>
should output "a=1 b=1" since in the Sum() function I set $b to point to $a,
and both of them refer to global variables $a and $b. Moreover, inside Sum()
$b is 1 after the assignment. Getting out of the function, $b returns to the
old value.
If I use $GLOBALS["b"] = &$GLOBALS["a"];
echo "a=$a b=$b";
will output "a=1 b=1" as expected.
Please clear me out on this one,
philip