[PHP] SPL Iterator and Associative Array

[Jason Karns]

I'm going to try my best to explain what I'm trying to do.

I have my own class that has an array member.  This class itself implements
Iterator.  One of the fields in the array is itself an array that I would
like to iterate over. Here's some code:

class Folio implements Iterator {
$projects = array(
        array(
                'title'=>"",
                'clip'=>"",
                'small'=>array('1','2','3')),
        array(
                'title'=>"",
                'clip'=>"",
                'small'=>array('0','1','2'))
);
function title($x){
        return current($this->projects[$]['small']);
}

function smalls($x){
        return $this->projects[$x]['small'];
}
}

And I'd like to do:
foreach($folio->smalls() as $s){
        echo $folio->title();
}

However, at the moment, doing this doesn't increment through the 'small'
array. It loops the correct number of times. But it only prints the first
one. I assumed it was because it wasn't moving the internal array pointer.
So I tried making the method smalls return a reference. Doing that made the
following work perfectly:

reset($folio->smalls());
while($s = current($folio->smalls())){
        echo $folio->small();
        next($folio->smalls());
}

But trying the foreach loop printed the second, and third elements, then
tried to output one passed the end of the array.

>From what I understand, foreach simply expands to 
reset();
while($x=current())
{...; next();}

What do I do?

Jason Karns
~~~~~~~~~~~
The Ohio State University [www.osu.edu]
Computer Science & Engineering [www.cse.osu.edu]

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