json_decode of a nested arrays returns an empty value

Question

I have a nested array that I converted to JOSN using json_encode(), and when I tried to convert it back to an array form using json_decode() the returned result was empty.

$arr = json_decode($json,true);

below is the result of print_r for the json variable:

[{
    "result":"SUCCESS",
    "msg":{
        "type":"localScan",
        "res":{
            "status":"0",
            "scan":[
                {
                    "name":"AVG",
                    "result":"0",
                    "type":"Clean"
                },{
                    "name":"ESET NOD32",
                    "result":"2",
                    "type":"Not Working"
                },{
                    "name":"AVAST",
                    "result":0,
                    "type":"Clear"
                },{
                    "name":"Kaspersky",
                    "result":"2",
                    "type":"Not Working"
                },{
                    "name":"Bit-defender",
                    "result":"2",
                    "type":"Not Working"
                }
            ]
        }
    }
},{
    "result":"SUCCESS",
    "msg":{
        "type":"localScan",
        "res":{
            "status":"1",
            "scan":[{
                    "name":"AVG",
                    "result":"1",
                    "type":"Autorun"
                },
                {
                    "name":"ESET NOD32",
                    "result":"2",
                    "type":"Not Working"
                },
                {
                    "name":"AVAST",
                    "result":2,
                    "type":"Not Working"
                },
                {
                    "name":"Kaspersky",
                    "result":"2",
                    "type":"Not Working"
                },
                {
                    "name":"Bit-defender",
                    "result":"2",
                    "type":"Not Working"
                }
            ]
        }
    }
}]

This is a partial array that is used to create the JSON, the json_decode function return value is FALSE.

Array ( 
    [0] => Array ( 
        [result] => SUCCESS 
        [msg] => Array ( 
            [type] => localScan 
            [res] => Array ( 
                [status] => 0 
                [scan] => Array ( 
                    [0] => Array ( 
                        [name] => AVG 
                        [result] => 0 
                        [type] => Clean 
                    ) 
                    [1] => Array ( 
                        [name] => ESET NOD32 
                        [result] => 2 
                        [type] => Not Working 
                    ) 
                    [2] => Array ( 
                        [name] => AVAST 
                        [result] => 0 
                        [type] => Clear 
                    ) 
                    [3] => Array 
                    ( 
                        [name] => Kaspersky 
                        [result] => 2 
                        [type] => Not Working 
                    ) 
                    [4] => Array ( 
                        [name] => Bit-defender 
                        [result] => 2 
                        [type] => Not Working 
                    )
                )
            ) 
        ) 
    )
)

Can you provide a PHP array that can reproduce this problem? — Passerby
– Passerby, Commented Apr 27, 2015 at 7:15
Seems valid json. Please provide what you are getting and show your efforts. — Parixit
– Parixit, Commented Apr 27, 2015 at 7:16
I have exit(), I'm returning the json from a web service which I built using the tutorial in this link: link — Muhmmad Aziz
– Muhmmad Aziz, Commented Apr 27, 2015 at 7:54

karvin.developer · Accepted Answer · 2015-04-27 08:41:24Z

1

Following the code that you can try as i have taken the data from your asked question :-

$jsonString='<String of the Json>'; $data = json_decode($jsonString); echo '<pre>'; print_r($data);

Hop this will help you

answered Apr 27, 2015 at 8:41

karvin.developer

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3 Comments

Muhmmad Aziz Over a year ago

Thank you, this code works... but why? I was using something similar!

karvin.developer Over a year ago

send me the code that you were using so that i can give you appropriate answer on why your code did not run

Muhmmad Aziz Over a year ago

I found my problem, I was unintentionally returning other results besides json string and the json_decode() was unable to decode that. It was solved when I removed them. thank you again.

Prakash · Accepted Answer · 2015-04-27 07:39:30Z

0

I think you didn't echo the json string -

<?php
  $arr = array(); // your array
  echo json_encode( $arr );
?>

answered Apr 27, 2015 at 7:39

Prakash

1717 bronze badges

2 Comments

Muhmmad Aziz Over a year ago

I used print_r(), I also used sizeof() to find the result length and it was 0.

Muhmmad Aziz Over a year ago

The code itself is very huge and the array is built by getting the results from different parts of it. if there is a problem it might be in the array structure or the encode/decode of the json string.

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