How to json_encode php array but the keys without quotes

Question

I'm trying to plot (with Flot) a pie chart with some data

var data = <?php echo json_encode($data)?> 

The result I get from that is this:

var data = [ {"label":"Crear Usuario", "data":"2"}, {"label":"Impresoras", "data":"1"}, {"label":"Problema Correo", "data":"1"}, {"label":"Requisicion Equipo", "data":"1"}, {"label":"Sitio Web", "data":"1"} ] 

The problem here is that I need the label and data without the quotes, I already tried json_encode($data, JSON_NUMERIC_CHECK); but only removes the quotes from the numbers.

The following format is what I need:

var data = [     {label:"Crear Usuario",data:2}, ... 

Answer 1

First, you have to generate your array in php so the data's value are integers, not strings:

I emulated your array from your json_encode(), I guess it looks like this (or it should):

$array =  array(                 array("label" => "Crear Usuario",   "data" => 2),                 array("label" => "Impresoras",      "data" => 1),                 array("label" => "Problema Correo", "data" => 1),                 array("label" => "Requisicion Equipo", "data" => 1),                 array("label" => "Sitio Web", "data" => 1)             );      $data = json_encode($array); 

• Notice that the 2 and 1's are unquoted, so this way they are integers, this is important.

Then you are missin in Javascript the JSON.parse() to actually make that output into a json object:

<script>     var data = '<?php echo $data; ?>';     var json = JSON.parse(data);     console.log(json);     console.log(json[0]); </script> 

• Notice that var data = ... is SINGLE QUOTED, so you catch the echo from php as a String

The console.log()'s output this for me:

[Object, Object, Object, Object, Object] // First console.log(): one object with the 5 Objects.  Object {label: "Crear Usuario", data: 2} // secons console log (json[0]) with the first object  

Looks like what you need, am I right?

Answer 2

There's no difference between quoted and unquoted keys. The problem is with the quoting around the actual data values, since Flot requires numbers, not strings.

The json_encode function decides to whether to quote based on the type of data you're giving it. In this case it looks like whatever operations you're performing to create $data are producing string values instead of integers. You need to re-examine those operations, or explicitly tell PHP to interpret them as numbers, using (int) or (float) casting, or the intval/floatval functions.