PHP arrays into javascript arrays

Question

I am a bit confused here on how I implement an array into JS from PHP....

I\'m doing this for testing - eventually I\'ll use long polling or websockets if they get h

Answer 1

Not sure why you need to wrap the json string in an Array, you could just do

var data = <?php echo $data; ?>;

--

To get the value of data in your js, you can either do data.x or data["x"]

Answer 2

You should try this instead:

var data = <?= $data ?>

Answer 3

You can use AJAX (much easier). Make your PHP script echo $data, and then using jQuery ajax request the data in your HTML file as JSON. For example:

$.ajax({
    url: script_url,
    dataType: 'json',
    success: function(json)
    {
         ...
    }
});

Answer 4

I agree with the answer in your comments. I would make an AJAX call to yourFile.php and then send back your JSON encoded response. so here would be my psuedo code.

1. Make AJAX request

$.ajax({
    url: "yourFile.php",
    dataType: 'json',
    success: function(data)
    {
         console.log(data);
    }
});

2. Make sure that your PHP file also returns header for JSON

header('Content-type: application/json');

2. Return {"x":"283","y":"99","sid":"1"} as data on your ajax request


3. call the values by using data.x or data.y or data.sid

Answer 5

Be sure you're echoing the PHP data into the <script> tags

<script>var data = Array(<?php echo $data; ?>)</script>

As an aside, it's a good idea to avoid using short tags (<? and ?>) in a production setting--many servers have them disabled by default, and it's a really annoying way to have your code break.

Answer 6

Not sure if <? $data; ?> is a typo or not but you should be using either <?=$data;?> or <?php echo $data; ?>