Question

I am using HighCharts Bar graph to plot data from mysql resultset into a bar graph.

Now the resultset of my query is as below:

Name       Expense
-----------------
July       700.0000
August     450.0000  
September  1700.0000

The series property of HighCharts require data in below format to plot the graph

[
 {name:"July",data:[700.0000]},
 {name:"August",data:[450.0000]},
 {name:"September",data:[1700.0000]}
] 

So I thought of coverting my resultset into a JSON object using json_encode($row).
But I got the following output:

[{"name":"July","data":"700.0000"},
 {"name":"August","data":"450.0000"},
 {"name":"September","data":"1700.0000"}] 

Doubts:

1. Is there a way to get/convert the resultset in exactly the same format as is required by the series property of HighCharts?

2. Also can I use an object of created in the php block, directly into the javascript? Say I create an object $jsonNameData out of my resultset. Then can I use it in the javascript as

   series: <? echo $jsonNameData ?>

EDIT:

I was able to solve Q1 by doing the following:

$count = 0;
$strSeries = "[";
while($r = mysql_fetch_assoc($result)) {

   if($count == 0){
       $strSeries .= "{name:'" . $r['name'] . "',";
       $strSeries .= "data:[" . $r['data'] . ']}';
       $count = 1;
   }
   else {
       $strSeries .= ",{name:'" . $r['name'] . "',";
       $strSeries .= "data:[" . $r['data'] . ']}';
   }
 $rows[] = $r;
}
$strSeries .= "]";

Got the required string into $strSeries.

Now the problem is the second question. I assigned the value of $strSeries to a variable in javascript but when I use that variable as

series: variableName

It is not plotting the graph properly even though the variable has proper value (checked through alert).

Answer 1

Not got a chance to run the code below, but this should work or something very similar to this

$series=array();
while($item = mysql_fetch_assoc($result)) {
  $serie=array(
     "name" => $item['name'],
     "data" => array(floatval($item['data']))
  );
  array_push($series,$serie);
}
echo json_encode($series);

An advice is to always stick to json_encode() for doing the jsonification. You may want to go through this example on the reference page to learn about how json_encode works with arrays in particular

EDIT: To answer your 2nd question. You may be getting a highchart error #14 in the javascript console? Have a look at this question Highcharts returning error 14

P.S. Please don’t mix multiple questions in one, post them separately, also use tools like javascript console and SO search more effectively