jquery – How to use JSON from db/php in JavaScript

I\’m using a map plugin to render some data. The data comes from the DB and into a json file – the script works great. I decided to use the data directly from the php output instead of making a json file. For some reason the javaScript doesn\’t accept the direct php input. I\’m using codeigniter MVC

Here is the sample code that currently works:

$.getJSON(\'_data/index/data.json\', function(data){ ...

Here is what I tried:

 var dataMap = \'<? print $mapData;?>\';
        $.getJSON(dataMap, function(data){...

* EDIT 2 *

Based on the answers – this option doesn\’t work either.

var dataMap = \'<?php echo $mapData;?>\';
        $.get(dataMap, function(data){...

And here is the json data

{\"countries\":{\"AL\":\"1\",\"GB\":\"1\",\"RS\":\"1\",\"BG\":\"6\",\"CA\":\"3\",\"AT\":\"2\",\"CD\":\"1\"}}

EDIT

$mapData is

FOREACH LOOP
 $retdata[\'countries\'][] = strtoupper($row->code);
 $retdata[\'num\'][] = $row->num;
ENDFOREACH LOOP
 $retdata[\'countries\'] = array_combine($retdat[\'code\'], $retdata[\'num\']);
 $retdata = json_encode($retdata);

And then it is printed into a file as normal. This is into the model, then I pass it to the controller and then into the view. The string is the same in the $dataMap that I have on file and the one that is being sent to the view.

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