<?php

$data = array('users' => array(
    array(
        'name' => 'foo',
        'age' => 22,
    ),
    array(
        'name' => 'Middle',
        'age' => 22,
    ),
    array(
        'name' => 'older Foo',
        'age' => 23,
    ),
    array(
        'name' => 'older Bar',
        'age' => 23,
    ),
    array(
        'name' => 'bar',
        'age' => 22,
    ),
), 'regroup_by' => 'name');
