<?php
$array = array(
'user' => array(
'name' => 'Abimael',
'lastname' => 'Martell',
'phones' => array(
'home' => '123456',
'work' => '3213215',
),
)
);
$object = json_decode(json_encode($array));
echo $object->user->phones->work; // 3213215