Unset won't work?

[frizzle]

Hi group,

Why won't $new_var be unset in the following function?
Am i missing out something?

Greetings Frizzle.

*************** *************** *******


function DoThis( $state, $fst = 1, $scnd = 2)
{
if( $state === 0 )
{
global $new_var;
unset($new_var) ;
}
else
{
global $new_var;
return $new_var = $fst + $scnd;
};
};


echo DoThis( 1, 4, 8);
echo DoThis( 0 );
echo 'new_var= '.$new_var;

[Marcin Dobrucki]

Re: Unset won't work?

frizzle wrote:[color=blue]
> Hi group,
>
> Why won't $new_var be unset in the following function?
> Am i missing out something?
>
> Greetings Frizzle.
>
> *************** *************** *******
>
>
> function DoThis( $state, $fst = 1, $scnd = 2)
> {
> if( $state === 0 )
> {
> global $new_var;
> unset($new_var) ;[/color]

- global $new_var;
- unset($new_var) ;
+ unset($GLOBAL['new_var'];

See the docs for details (www.php.net/unset)
[color=blue]
> }
> else
> {
> global $new_var;
> return $new_var = $fst + $scnd;
> };
> };
>
>
> echo DoThis( 1, 4, 8);
> echo DoThis( 0 );
> echo 'new_var= '.$new_var;[/color]

Note: you don't need ; after the curly braces. And you should
probably also initialize the $new_var before DoThis();

Anyway, IMHO, unsetting global variables within functions is a sure
way of shooting yourself in the foot. BTW, because you actually unset
the variable the last line will throw a notice about undef variable.

/m