Json encode PHP array decoding it to a json string

Question

I json_encode the following ($output) array:

Array
(
[0] => Array
    (
        [month] => January 2014
        [posts] => 2
    )

[1] => Array
    (
        [month] => December 2013
        [posts] => 1
    )

[2] => Array
    (
        [month] => August 2013
        [posts] => 1
    )
)

<?php $json = json_encode($output); ?>

I then print it to the console to check it:

<script>    
var myjson = <?php echo $json; ?>;
console.log(myjson);
</script>

In the console, 'myjson' is formed like thus:

[Object { month="January 2014", posts=2}, 
Object { month="December 2013", posts=1}, 
Object { month="August 2013", posts=1}] --------------------------($)

an array of objects. Whereas I need it to be like:

[{
"Month": "Jan 2014",
"Posts": 2,
}, {
"Month": "Dec 2013",
"Posts": 1,
}, {
"Month": "Aug 2013",
"Posts": 1,
}];

a json string. If I can somehow remove the 'Object' syntax and instead of '=', there would be colons, I'm good. Looking around on this site and trying various methods:

<?php
 $json = json_encode(array_values($output));
 $json = json_encode(array_values($output),true);
 $json = json_encode($output,true);
?>

I've read about lot's of people having the same difficulty but all solutions tend to be very specific in nature. So my question would be, given any two-dimensional array how do I json_encode it in order to give me or return a json string in javascript?

If I run ($) through http://jsonlint.com/ it returns:

Parse error on line 1:
[    Object{        url=
-----^
Expecting 'STRING', 'NUMBER', 'NULL', 'TRUE', 'FALSE', '{', '[', ']'

vollie · Accepted Answer · 2014-02-03 11:08:46Z

1

It is, in fact, giving you the proper JSON; however, you're echoing the whole thing without delimiters and so it is parsed. If you want the string literal to appear in your console log as a string simple put the output between delimiters:

<script>
  var myjson = '<?php echo $json ?>';
  console.log(myjson);
</script>

answered Feb 3, 2014 at 11:08

vollie

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1 Comment

vollie Over a year ago

No probs, also don't forget to escape if needed (i.e. if you potentially have ' in your data)

William Buttlicker · Accepted Answer · 2014-02-03 10:54:25Z

0

Try parseJSON:

<script>    
var myjson = $.parseJSON(<?php echo $json; ?>);
console.log(myjson);
</script>

answered Feb 3, 2014 at 10:54

William Buttlicker

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Comments

rccoros · Accepted Answer · 2014-02-03 11:07:28Z

0

You can use Stringify

<script>    
    var myjson = JSON.stringify(<?= $json; ?>, null, 2);
    console.log(myjson);
</script>

answered Feb 3, 2014 at 11:07

rccoros

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user3205578 · Accepted Answer · 2014-02-03 11:09:55Z

0

Put " around the keys for the array, so for example;

Instead of:

$output[][Month] = "January 2014"

type:

$output[]["Month"] = "January 2014"
$output[]["Posts"] = "2"

Then in the program that is receiving the json object, you can do a loop..

for(var i=0;i<myArray.length;i++){
    var thisElement = myArray[i];
    myMonth = thisElement["Month"];
    myPosts = thisElement["Posts"];
 }

Alternatively, if you're using angular (like i was which was how i learned json formatting);

When receiving it;

$scope.MonthInfo = data

//on your html page
<div ng-repeat="monthLoop in MonthInfo"> {{monthLoop.Month}} {{monthLoop.Posts}}</div>

Hope this helps somehow :)

answered Feb 3, 2014 at 11:09

user3205578

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