Online PHP editor | refs for 38rS3

@ 2015-04-15T15:41:11Z

<?php

$array = [
    1 => [
        1 => [
            'anna',
            'alice'
        ],
        2 => [
            'bob',
            'bartold'
        ]
    ],
    2 => [
        1 => [
            'carol'
        ],
        2 => [
            'david'
        ]
    ]
];

$result = [];
foreach ($array as $key => $arr) {
    foreach ($arr as $k => $v) {
        $result[$k] = $v;
    }
}

var_dump($result);