Online PHP editor | refs for JNtua

<?php $literature = []; $literature['authors'] = [ ['name' => 'hhh', 'adress' => 'hemingway@oldtimers.com','yearOfBirth' => '1869'], ['name' => 'yyy', 'adress' => 'saintexupéry@oldtimers.com','yearOfBirth' => '1900'], ['name' => 'zzz', 'adress' => 'conandoyle@oldtimers.com','yearOfBirth' => '1859'] ]; $literature['books'] = [ ['title' => 'ggg', 'author' => $literature ['authors'][0]['name'], 'year' => 1943], ['title' => 'uuu', 'author' => $literature ['authors'][0]['name'], 'year' => 1887], ['title' => 'ttt!', 'author' => $literature ['authors'][0]['name'], 'year' => 1929], ['title' => 'vvv', 'author' => $literature ['authors'][0]['name'], 'year' => 1936], ['title' => 'ooo', 'author' => $literature ['authors'][0]['name'], 'year' => 1938] ]; print_r($literature);