Does anyone know why this php iteration won't work

Does anyone know why this doesn't work

function my_current($array) {
    return current($array);
}

$array = array(1,3,5,7,13);

while($i = my_current($array)) {
    $content .= $i.',';
    next($array);
}

yet this does

$array = array(1,3,5,7,13);

while($i = current($array)) {
    $content .= $i.',';
    next($array);
}

or how to make the top one work? It's a little question but it开发者_StackOverflow would be a big help! Thanks Richard

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The array is copied, which means that the current pointer is lost. Pass it as a reference.

function my_current(&$array) {

Or better yet, use implode().

---

By default a copy of the array is being made.

Try this:

function my_current(&$array) {
    return current($array);
}

---

I guess it's because when you call a function with an array parameter, the array is copied over. Try using references.

function my_current(&$array) {
    return current($array);
}

Notice the &.