Passing array through AJAX from php to javascript

Question

I need to get an array generated from a script php. I have Latitude and Longitude for each user in a database. I take the values from the db with this code (file.php):

Answer 1

use this

echo json_encode($array);

on server side

and

var arr=JSON.parse(result);

on client side

Answer 2

You need to convert the php array to json, try:

echo json_encode($array);

jQuery should be able to see it's json being returned and create a javascript object out of it automatically.

$.post('./file.php', function(result)
{    
     $.each(result, function()
     {
         console.log(this.Latitude + ":" + this.Longitude);
     });
});

Answer 3

As Ruslan Polutsygan mentioned, you cen use

echo json_encode($array);

on the PHP Side.

On the Javascript-Side you can simply add the DataType to the $.post()-Function:

$.post(
  './file.php',
  function( result ){    
    console.log(result);
  },
  'json'
);

and the result-Parameter is the parsed JSON-Data.

You can also set the correct Content-Type in your PHP Script. Then jQuery should automaticly parse the JSON Data returned from your PHP Script:

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

See
http://api.jquery.com/jQuery.post/
http://de3.php.net/json_encode