How to Convert PHP Array into JavaScript Array

php2js-array.php

<?php
/*
You can easily use PHP array in javascript you only need to convert PHP array into JSON format Using json_encode() function.
PHP array can be converted to JavScript array and accessible in JavaScript. 
Whatever the array type is, a single or multidimensional or indexed or associative array.
*/

//In PHP
var $booksArray = array("Book-1", "Book-2", "Book-3");

//In Javascript
<script type="text/javascript">
var books = JSON.parse('<?= json_encode($booksArray); ?>');
console.log(books[2]); // Output will be: Book-3
// OR
alert(books[0]); // Output will be: Book-1
</script>

// For Multidimensional Array
// In PHP
$booksArray = array( 
               array('title'='Book-1', 'isbn'=>'12345'),
               array('title'='Book-2', 'isbn'=>'13344'),
               array('title'='Book-3', 'isbn'=>'00440')
             );
// In Javascript
<script type="text/javascript">
var books = JSON.parse('<?= json_encode($booksArray); ?>');
console.log(books[0]['title']); // Output will be: Book-1
// OR
alert(books[1]['isbn']); // Output will be: 13344
</script>
?>

this is not working

line 13 and 28 should look like this:
var books = JSON.parse('<?= json_encode($booksArray); ?>');

Fixed according to @Misha-in