意外的令牌“ a”

Using jQuery I have made the following JSON data:

[{"name":"date","value":"24-05-2013"},{"name":"omschrijving","value":""}]

This is all valid JSON, but when I try to fire the data using jQuery it is giving me the following error:

Unexpected token A

Here you can see the AJAX call:

$.ajax({
        type: "POST",
        url: "modules/rma/ajaxhandler.php",
        contentType:"application/json; charset=utf-8",
        data: goededata,
        dataType: 'json',
        succes: function(data) { alert(data); },
            error: function(XMLHttpRequest, textStatus, errorThrown) {
                alert( textStatus + " " + errorThrown); }
    }).done(function() {
    });

ajaxhandler.php contains the following lines:

<?php
error_reporting(E_ALL);
session_start();

/**
 * Ajaxhandler
 *
 */

print_r($_POST);

echo json_decode($_POST['data']);
?>

The data that needs to be sent is made the following way:

var allFields = $( [] ).add( date ).add( omschrijving ).add( klachtomschrijving ).add(status).add(artikelnummer).add(klantid).add(meldidrepro).add(meldidaankoop).add(leverancier).add(inkoopregelid).add(serienummer);`

var goededata = JSON.stringify(allFields.serializeArray());

How can I correct this error?

You can not use print_r because you are requesting json. The Server-Response is not valid. Comment out the print_r call and it should work.

The unexpected token 'a' comes from the output of print_r:

array(
  ...
)

You could use an extra key for debugging:

echo json_decode(array(
  'data' => $_POST['data'],
  'debug' => print_r($_POST, true), // note the second parameter for print_r
));

on the client side you work with response.data and your debug output is in `response.debug'.

But, why not simply log debug output on the server side into a file?

The error_reporting(E_ALL); will be a problem too.

It's always a good idea to set the response type:

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

Chances are your print_r is breaking the expected return call from your AJAX request. Also I don't see where any post data was getting thrown. What I would expect to have happen here is an empty alert box. comment our the print_r