d3js example not working with php's json_encode

Question

in my d3js example contain [ symbol after children key & working perfectly

{"name": "root",
  "children": [
    {"name": "typeA(1095)",
      "children": [
        {"name": "2010(365)",
          "children": [
            {"name": "january(31)", "value": 31},

http://bl.ocks.org/mbostock/1283663

https://gist.github.com/mbostock/1283663/raw/a05a94858375bd0ae023f6950a2b13fac5127637/readme.json

but i convert a multi-dimensional array using php json_encode there is no [ symbol so when i pass it to d3js example it's not working

$json = array('name'=>'p_date','children'=>array('name'=>'HedCET','value'=>10));

json_encode($json) output

{"name":"p_date","children":{"name":"HedCET","value":10}}

there is no [ symbol after children key, is there any additional option to enable [ symbol in php json_encode ?

OR is there any difference between d3js json file and php json file ?

Are you passing JSON_FORCE_OBJECT as an option to json_encode? — Lars Kotthoff
– Lars Kotthoff, Commented Jan 8, 2014 at 19:45

twil · Accepted Answer · 2014-01-08 20:38:22Z

0

In PHP

'children' => array('name' => 'HedCET', 'value' => 10)

is

"children": {"name": "HedCET", "value": 10}

in JSON.

You have forgotten to put another array():

'children' => array( array('name' => 'HedCET', 'value' => 10) )

answered Jan 8, 2014 at 20:38

twil

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