public int hashCode() {
        int total = 0;
        Iterator it = createEntrySetIterator();
        while (it.hasNext()) {
            total += it.next().hashCode();
        }
        return total;
    }
Gets the standard Map hashCode.

@return the hash code defined in the Map interface
jphp-runtime/src/php/runtime/common/collections/map/AbstractHashedMap.java