php zend framework json Decoding failed

Question

Im using ajax:

$.ajax({
        url: 'testURL',
        type: 'POST',
        dataType: 'json',
        data: {userId: userIds, imageUrl: imageUrl, message: message },
        success: callBack
    });

and server side:

$data = $this->_request->getPost();
        $response = Zend_Json::decode($data, true);

But Im getting an error on server side:

Decoding failed

What am i doiung wrong ?

Thanks for any help

EDIT:

Ive tried that:

$.ajax({
url: STValentines.baseUrl+'/mensaje/sendmessage',
type: 'POST',
dataType: 'json',
data: {userId: '111', imageUrl: 'imageurl', message: 'message' },
success: callBack
});

the same error

EDIT 2:

Here is once again js code php code and the result :(

 $.ajax({
        url: 'testURL',
        type: 'POST',
        dataType: 'json',
        data: "{'userId': 'test1234', 'imageUrl': 'testimageUrl', 'message': 'testmessage' }",
        success: callBack
    });


 public function sendmessageAction() {
    $data = $this->_request->getPost();
    print_r($data);
    $response = $data;
$this->_helper->json($response);

RESULT:

    Array
(
)

Does $data actually contain a JSON string? Does PHP's native json_decode() work? Are there multibyte/non-ascii characters in the JSON string? — Martin Tournoij
– Martin Tournoij, Commented Feb 1, 2012 at 21:31
Your edits are incorrect. Again, you're not quoting your object property names. Also, strings need to use quotes not apostrophes. PHP is VERY picky about its JSON syntax. Your edited AJAX call's data should've been as follows {"userId": "111", "imageUrl": "imageurl", "message": "message" } to be a suitable test. — Crashspeeder
– Crashspeeder, Commented Feb 1, 2012 at 22:19
Still incorrect. You're not looking at how my code is formatted. Until you pay attention to the syntax of the JSON (no apostrophes, strings are quoted, object property names are quoted) it won't parse properly in PHP. — Crashspeeder
– Crashspeeder, Commented Feb 1, 2012 at 22:45

RockyFord · Accepted Answer · 2012-02-02 07:35:51Z

3

Crashspeeder should be correct at least in his data format.

from the PHP manual - json_decode — Decodes a JSON string

//correct json format
Example #1 json_decode() examples


<?php
$json = '{"a":1,"b":2,"c":3,"d":4,"e":5}';

var_dump(json_decode($json));
var_dump(json_decode($json, true));

?>

and

Example #3 common mistakes using json_decode()

<?php

// the following strings are valid JavaScript but not valid JSON

// the name and value must be enclosed in double quotes
// single quotes are not valid 
$bad_json = "{ 'bar': 'baz' }";
json_decode($bad_json); // null

// the name must be enclosed in double quotes
$bad_json = '{ bar: "baz" }';
json_decode($bad_json); // null

// trailing commas are not allowed
$bad_json = '{ bar: "baz", }';
json_decode($bad_json); // null

?>

also you can use...

json_last_error — Returns the last error occurred

to get error.

answered Feb 2, 2012 at 7:35

RockyFord

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2 Comments

gruber Over a year ago

I think that the problem is that $data = $this->_request->getPost(); returns an array not string and thats why Zend_Json::decode($data, true); throws an error :(

RockyFord Over a year ago

@gruber True, but $this_request->getPost('data') should have a json string. or you could try $this->_request->getRawBody(), which returns the raw post data.

Crashspeeder · Accepted Answer · 2012-02-01 21:52:42Z

1

At first glance, it looks like the data you're sending might be incorrect. If I remember correctly object properties need to be quoted. Try this.

$.ajax({
    url: 'testURL',
    type: 'POST',
    dataType: 'json',
    data: {"userId": userIds, "imageUrl": imageUrl, "message": message },
    success: callBack
});

answered Feb 1, 2012 at 21:52

Crashspeeder

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4 Comments

Crashspeeder Over a year ago

What is PHP receiving? Can you post a print_r($data); and show us the results?

Crashspeeder Over a year ago

Your edit is, once again, wrong. Your edited AJAX call does not look like mine above. Notice I don't have quotes around the whole data section and that there isn't a single apostrophe in my data either.

gruber Over a year ago

would it be ok ? $.ajax({ url: 'testURL', type: 'POST', dataType: 'json', data: {"userId": "test1", "imageUrl": "test2", "message": "test3" }, success: callBack });

Crashspeeder Over a year ago

Yes. At this point, however, it's post data and does not to be json_decode()d. You can just access it using $data as an array.

Salman · Accepted Answer · 2012-05-23 07:35:13Z

0

I suggest the following:

Remove dataType: 'json' from the AJAX request.
In the action, use return $this->_helper->json($responseArray);. No need to change layout or anything.

answered May 23, 2012 at 7:35

Salman

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