<?php
$characters = [
    "Negan" => [
        "city" => "The Sanctuary",
        "weapon" => "Lucille"
    ],
    "Daryl" => [
        "city" => "Alexandria",
        "weapon" => "crossbow"
    ],
    "Ezekiel" => [
        "city" => "The Kingdom",
        "weapon" => "Shiva"
    ],
    "John 117" => [
        "city" => "Pillar of Autumn",
        "weapon" => "needler"
]
];
var_dump($characters);