Lamonte wrote:
> Shawn McKenzie wrote:
>> Lamonte wrote:
>>
>>> Shawn McKenzie wrote:
>>>
>>>> Shawn McKenzie wrote:
>>>>
>>>>
>>>>> Lamonte wrote:
>>>>>
>>>>>> Setting a variable inside a function and making it global inside an
>>>>>> inner function doesn't work?
>>>>>>
>>>>>> Right well I have created this function:
>>>>>>
>>>>>> [code]
>>>>>> function getForumChildrenTree( $id )
>>>>>> {
>>>>>> $id = intval( $id );
>>>>>> $treeResult = array(
>>>>>> 'topics' => array(),
>>>>>> 'posts' => array(),
>>>>>> 'forums' => array(),
>>>>>> );
>>>>>> applyForumChildrenTree( $id );
>>>>>> }
>>>>>> [/code]
>>>>>>
>>>>>> What this function does: Basically this function is set to an id of a
>>>>>> forum id, then theres a variable that stores an array. Then theres a
>>>>>> recursive function called "applyForumChildrenTree" to update the
>>>>>> "treeResult" variable, but it's not exactly working. For some reason
>>>>>> when I did print_r inside the "applyForumChildrenTree" the array
>>>>>> is as
>>>>>> applied:
>>>>>>
>>>>>> [quote]
>>>>>> Array
>>>>>> (
>>>>>> [forums] => Array
>>>>>> (
>>>>>> [0] => 3
>>>>>> [1] => 8
>>>>>> [2] => 5
>>>>>> )
>>>>>>
>>>>>> [topics] => Array
>>>>>> (
>>>>>> [0] => 5
>>>>>> )
>>>>>>
>>>>>> [posts] => Array
>>>>>> (
>>>>>> [0] => 5
>>>>>> )
>>>>>>
>>>>>> )
>>>>>> [/quote]
>>>>>>
>>>>>> Then inside the actual function "getForumChildrenTree" I tried
>>>>>> outputting the "treeResult" array using "print_r" after the recursive
>>>>>> function "applyForumChildrenTree" as follows:
>>>>>>
>>>>>> [code]
>>>>>> function getForumChildrenTree( $id )
>>>>>> {
>>>>>> $id = intval( $id );
>>>>>> $treeResult = array(
>>>>>> 'topics' => array(),
>>>>>> 'posts' => array(),
>>>>>> 'forums' => array(),
>>>>>> );
>>>>>> applyForumChildrenTree( $id );
>>>>>> print_r($treeResult);
>>>>>> }
>>>>>> [/code]
>>>>>>
>>>>>> and it showed me a blank array, (default array I created) as follows:
>>>>>>
>>>>>> [quote]
>>>>>> Array
>>>>>> (
>>>>>> [topics] => Array
>>>>>> (
>>>>>> )
>>>>>>
>>>>>> [posts] => Array
>>>>>> (
>>>>>> )
>>>>>>
>>>>>> [forums] => Array
>>>>>> (
>>>>>> )
>>>>>>
>>>>>> )
>>>>>> [/quote]
>>>>>>
>>>>>> Is this a bug? I'm using PHP 5.2.4
>>>>>>
>>>>> Well you haven't defined anything global in your code, unless you did
>>>>> inapplyForumChildrenTree(), in which case it needs to be global
>>>>> everywhere that you want to use it as global.
>>>>>
>>>>> Easiest way would just be to use it like this everywhere:
>>>>>
>>>>> $GLOBALS['treeResult'] = array(
>>>>> 'topics' => array(),
>>>>> 'posts' => array(),
>>>>> 'forums' => array(),
>>>>> );
>>>>>
>>>>> -Shawn
>>>>>
>>>> After a second look, probably a better alternate would be to have
>>>> applyForumChildrenTree() return the array, then use $treeResult =
>>>> applyForumChildrenTree( $id );
>>>>
>>>> -Shawn
>>>>
>>>>
>>> As I said in my first reply, its a "Recursive function".so I couldn't
>>> return the array.
>>>
>>>
>>
>> Please reply to the list.
>>
>> Sure, your function can return an array if it's recursive. It returns
>> it to itself and uses whatever logic you need to add to the current
>> array or merge or remove or whatever. Regardless, I explained why you
>> aren't seeing the vars as global and a better way to do it using the
>> $GLOBALS array. I may be off but we would need to see the
>> applyForumChildrenTree() to know.
>>
>> -Shawn
>>
>>
> Yep I'm using globals, thanks :).
>
> function getForumChildrenTree( $id )
> {
> $id = intval( $id );
> $GLOBALS['treeResult'] = array(
> 'topics' => array(),
> 'posts' => array(),
> 'forums' => array(),
> );
> applyForumChildrenTree( $id );
> $treeResult = $GLOBALS['treeResult'];
> unset($GLOBALS['treeResult']);
> return $treeResult;
> }
Good job.
Actually, if you used $GLOBALS['treeResult'] in applyForumChildrenTree()
then you could skip the:
$treeResult = $GLOBALS['treeResult'];
unset($GLOBALS['treeResult']);
return $treeResult;
and just:
return $GLOBALS['treeResult'];
or use $GLOBALS['treeResult']; somewhere later instead of returning it.
Also, I would be curious to see applyForumChildrenTree() because chances
are great that you can return an array and not use globals at all unless
it is "really" needed somewhere else in the app.
-Shawn
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