PHP驱动MongoDB整数问题的BUG和策略

<?php

ini_set(''mongo.native_long'', 1);

$instance = new Mongo();

$instance = $instance->selectDB(''test'');

$map = ''
    function() {
        emit(this.group_id, this.count);
    }
'';

$reduce = ''
    function(key, values) {
        var sum = 0;

        for (var index in values) {
            sum += values[index];
        }

        return sum;
    }
'';

$result = $instance->command(array(
    ''mapreduce'' => ''test'',
    ''map''       => $map,
    ''reduce''    => $reduce
));

$result = iterator_to_array($instance->{$result[''result'']}->find());

var_dump($result);

?>