Change variable with a function

Hello,

I want to change a variable in a function.
First I set a variable '$var1' to 'NO'.
Then I call the function, within the function he have to set the variable to
'YES'
Then I say: echo $var1;
$var1 is still 'NO' :S

<?PHP
$var1 = 'NO';

setvar();
echo $var1;

function setvar() {
$var1 = 'YES';
}
?>

Can a function set a variable outsite the function ?
BTW, this is a little example script.

Bert

Bertman wrote:
> Hello,
>
> I want to change a variable in a function.
> First I set a variable '$var1' to 'NO'.
> Then I call the function, within the function he have to set the
variable to
> 'YES'
> Then I say: echo $var1;
> $var1 is still 'NO' :S
>
> <?PHP
> $var1 = 'NO';
>
> setvar();
> echo $var1;
>
> function setvar() {
> $var1 = 'YES';
> }
> ?>
>
> Can a function set a variable outsite the function ?
> BTW, this is a little example script.

To do it they way you have it in your example, you need to declate
$var1 as a global inside the function.

function setvar() {
global $var1;
$var1 = 'YES';
}

The other way would be to have the function return a value:

$var1 = setvar();

function setvar() {
return('YES');
}

Ken

Yeah great it works :D

function setvar() {
global $var1;
$var1 = 'YES';
}


"Ken Robinson" <kenrbnsn@rbnsn.com> schreef in bericht
news:1116002328.153250.318100@f14g2000cwb.googlegr oups.com...
>
> Bertman wrote:
>> Hello,
>>
>> I want to change a variable in a function.
>> First I set a variable '$var1' to 'NO'.
>> Then I call the function, within the function he have to set the
> variable to
>> 'YES'
>> Then I say: echo $var1;
>> $var1 is still 'NO' :S
>>
>> <?PHP
>> $var1 = 'NO';
>>
>> setvar();
>> echo $var1;
>>
>> function setvar() {
>> $var1 = 'YES';
>> }
>> ?>
>>
>> Can a function set a variable outsite the function ?
>> BTW, this is a little example script.
>
> To do it they way you have it in your example, you need to declate
> $var1 as a global inside the function.
>
> function setvar() {
> global $var1;
> $var1 = 'YES';
> }
>
> The other way would be to have the function return a value:
>
> $var1 = setvar();
>
> function setvar() {
> return('YES');
> }
>
> Ken
>