decoding json problem, returns null value

Question

my solution was :

function format_json($str)
  {
    ...
    $str = preg_replace('/([a-z]+):/i', '"$1":', $str);
    $wtr = array('""',',",');
    $rpw = array('"',',');
    return str_replace($wtr, $rpw, $str);
  }

Keys and strings must be in double quotes. Where do you get the JSON from? — Felix Kling
– Felix Kling, Commented Jul 27, 2011 at 8:40
Note: This is valid JavaScript but not valid JSON. Valid JavaScript is not automatically valid JSON. — Salman Arshad
– Salman Arshad, Commented Jul 27, 2011 at 9:18

Alison R. · Accepted Answer · 2014-02-21 22:11:34Z

2

Like stated in previous answers, you need to add double-quote to strings. A really fast and quick way to check json string is to use JSONLint.

Here's the output you will get from JSONLint:

Parse error on line 1:
{    m: [        {     
-----^
Expecting 'STRING', '}'

So you need to change all parts that don't have double quotes. For example:

{m: [ ...

Will become:

{"m": [ ...

Edit after comment: It seems that the double quotes inside strings are not escaped properly. For example:

{"m" : [ { "g": [ "32", "Brezilya-"Serie" A", "83", ...
Here -----------------------------^ and ^

Should be:

{"m" : [ { "g": [ "32", "Brezilya-\"Serie\" A", "83", ...

edited Feb 21, 2014 at 22:11

Alison R.

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answered Jul 27, 2011 at 8:44

rzetterberg

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3 Comments

rzetterberg Over a year ago

No worries. I hope it works out for you. Haha, just noticed what I wrote "fast and quick". It's like saying "big and large" :P

John Over a year ago

:D, all strings are now in double quotes but now the JSONLint says " invalid array length " ....

John Over a year ago

yes i see, but the probles it that the function which adds keys inside double quotes ( ex : m to " m " ) some times does things like "Brezilya-"Serie" A".. i will try to fix it

Clueless · Accepted Answer · 2011-07-27 08:40:27Z

2

JSON only supports double-quoted strings, and all of the property names must be quoted.

answered Jul 27, 2011 at 8:40

Clueless

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6 Comments

John Over a year ago

just tried... don't work , the JSONLint says : " invalid array length "

Clueless Over a year ago

Can you update your question with the data after the fixes you made?

John Over a year ago

ok i updated my question, now you can see the data after some changes

John Over a year ago

oh... the function to place keys in double quotes did some wrong things... i will try to fix it..

Clueless Over a year ago

It looks like you surrounded a lot words with double quotes, so now some strings aren't valid. See "Brezilya-"Serie" A" for example: that isn't a valid string.

|

Salman Arshad · Accepted Answer · 2011-07-27 08:44:41Z

2

Try to run your JSON through JSONLint. To begin with, property names must be enclosed in double quotes. Then, strings must also be enclosed in double quotes instead of single quotes:

{
    "m": [
        {
            "g": [
                32,
                "Brezilya-SerieA",
                .
                .
                .

answered Jul 27, 2011 at 8:44

Salman Arshad

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Comments

hadvig · Accepted Answer · 2011-07-27 08:52:55Z

2

You can parse this string with class from here http://pear.php.net/pepr/pepr-proposal-show.php?id=198

require_once 'JSON.php';
$json = new Services_JSON();
$data = $json->decode($yourstring);

answered Jul 27, 2011 at 8:52

hadvig

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Comments

ShrekOverflow · Accepted Answer · 2011-07-27 08:41:51Z

1

IN your JSON you should use " " instead of ' ' and that will get solved.

its a convention in JSON that the double qoutes will be used to define object names or objects .. try using the way u write a string in C++ for defining your json .

answered Jul 27, 2011 at 8:41

ShrekOverflow

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6 Comments

John Over a year ago

sorry, but have you read all question? I said i tried to replace single quotes '' with double quotes " " but it also don't work...

ShrekOverflow Over a year ago

checking again for fixin it now and telling u whats wrong gimme 1 min

ShrekOverflow Over a year ago

you need to quote the m aswell i mean it should look like {"m":[{"g" instead of {m:[{g did u tried properly qouting all the properties i think thats where its bugging ?

John Over a year ago

I will write a little function now to put all strings in quotes... thanks

ShrekOverflow Over a year ago

No problem :) :) you should rather parse json on client side using JSON.stringify( object ) method in JavaSCRIPT or json_encode( object ) if thats PHP

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