List and each of the related issues

List and each of the questions
$fruit = Array (' a ' = = ' Apple ', ' b ' = ' banana ', ' c ' = ' cranberry ');

Reset ($fruit);
while (list ($key, $val) = each ($fruit)) {
echo "$key = $val \ n";
}
?>
Results:
A = Apple
b = Banana
c = Cranberry

I want to ask, the first time each (), the result of Print_r ($fruit) should be:
Array ([1] = Apple [value] + apple [0] = a [key] + a)
At this point the list ($key, $val), we can see that the array is four parameters, and the list itself is 2 parameters, and how the order is exactly a assigned to $key,apple to $val it?

------Solution--------------------
List only eats numeric indexes.
------Solution--------------------
Right. You understand right. This is the mechanism of list. From 0,1 ... keep looking down.

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