decode json format data sent via url

Question

consider the following url

index.php?json={uid:guest|10001441}

I am not able to decode the data . I need the output as {"uid":"guest|10001441"}.

The code i m using is

if (isset($_GET['json']))
{
   $url_data = $_GET['json'];
   $decoded_data = json_decode($url_data,true);
   var_dump($decoded_data);
}

But it gives me output as NULL. What am i doing wrong?? Do i need to pass data in a different format??

@Mayur You are getting wrong json data its not a valid json string . check where it is being generated and correct them. — Rajeev Ranjan
– Rajeev Ranjan, Commented Jul 30, 2013 at 12:14
in the url the json is invalid, u forgot the quotes... better if you send by post no ? — mlwacosmos
– mlwacosmos, Commented Jul 30, 2013 at 12:15

Jason · Accepted Answer · 2013-07-30 13:12:46Z

2

It seems impossible to decode a JSON string without double quotes, as it's hard to determine whether a JSON string "{A:B:C}" is encoded from {"A":"B:C"} or from {"A:B":"C"}

You can use urlencode() to encode the JSON string or just ignore the extreme cases and add the double quotes manually to make the JSON string valid, hope this help :D

answered Jul 30, 2013 at 13:12

Jason

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Comments

Amal · Accepted Answer · 2013-07-30 12:18:39Z

1

The data you're passing is not valid JSON. It doesn't have double quotes around it currently. Try this:

if (isset($_GET['json']))
{
   $url_data = '"'.$_GET['json'].'"';
   $decoded_data = json_decode($url_data,true);
   var_dump($decoded_data);
}

Output:

string(20) "{uid:guest|10001441}"

Also, I'd suggest using POST instead of GET here.

answered Jul 30, 2013 at 12:18

Amal

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Comments

BenMorel · Accepted Answer · 2013-11-02 21:50:47Z

1

If you pass it like this it will work: ?json={"uid":"guest|10001441"}

But I am not sure whether it is a proper method.

edited Nov 2, 2013 at 21:50

BenMorel

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answered Jul 30, 2013 at 12:13

Prasanth Bendra

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4 Comments

Mayur Over a year ago

are quotes allowed in url..i dnt think so

Prasanth Bendra Over a year ago

It works for me, you can use url_encode / decode , Still I am not sure it is a proper method

Prasanth Bendra Over a year ago

It works for me, you can use url_encode / decode , Still I am not sure it is a proper method

Prasanth Bendra Over a year ago

I just used your code and in url I added the quotes as in my answer thats it and worked

MajorCaiger · Accepted Answer · 2013-07-30 12:22:37Z

0

The JSON you have in your URL is not valid. PHP's json_decode looks for double quotes around the uid and it's value.

EDIT: Rather than storing the data in the URL as json could you not store the data as key value pairs such as

?uid=value

And then you could do something like

$data = json_encode( $_GET );

edited Jul 30, 2013 at 12:22

answered Jul 30, 2013 at 12:11

MajorCaiger

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Comments

Rajeev Ranjan · Accepted Answer · 2013-07-30 12:25:05Z

0

you can encode url parameter with base64_encode()

$json=base64_encode('{"uid":"guest|10001441"}');

url will look like this

index.php?json=eyJ1aWQiOiJndWVzdHwxMDAwMTQ0MSJ9

then do like this :-

if (isset($_GET['json']))
{
   $url_data = base64_decode($_GET['json']);
   $decoded_data = json_decode($url_data,true);
   var_dump($decoded_data);
}

answered Jul 30, 2013 at 12:25

Rajeev Ranjan

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4 Comments

Barmar Over a year ago

That won't help if the original data isn't valid JSON.

Rajeev Ranjan Over a year ago

@Barmar thanks to remind ,but i said it in comments that use a valid json string.

Barmar Over a year ago

OK. But if you're going to encode a URL parameter, urlencode() is the usual format, so that it's still somewhat readable.

Rajeev Ranjan Over a year ago

@Barmar if we use urlencode will be somting like this %7B%22uid%22%3A%22guest%7C10001441%22%7D, means to say use encoding .I would like it to send via post.

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