Implode and Explode Multi dimensional arrays [duplicate]

Answer 1

You can do this by writing a recursive function:

function multi_implode($array, $glue) {
    $ret = '';

    foreach ($array as $item) {
        if (is_array($item)) {
            $ret .= multi_implode($item, $glue) . $glue;
        } else {
            $ret .= $item . $glue;
        }
    }

    $ret = substr($ret, 0, 0-strlen($glue));

    return $ret;
}

As for exploding, this is impossible unless you give some kind of formal structure to the string, in which case you are into the realm of serialisation, for which functions already exist: serialize, json_encode, http_build_query among others.