I have a simple checkbox, on click it sends XHR to PHP page , php processes correctly and I use `json_encode($response)` to return. But instead of a simple true or false I get the source code for the page and it is causing a "parsererror" of course.
ajax call as follows

```
$.ajax({
type: "post",
url: "myprocessor.php",
dataType: 'json',
data: { "id" : idnumber, "action": "makeLive", "isLive" : "1" },
beforeSend: function(data) {
            $("#ajaxInProgress").addClass('progress');
        },
        success: function(data) {
            $("#status").removeClass().addClass((data.error === true) ? 'error' : 'success').text('Success! Appraiser is NO LONGER Live ').slideDown('slow');
        },
        error: function(data) {
            $("#status").removeClass().addClass('error').text(' - Changing the Live status for this appraiser to "Not Live" has failed - APPRAISER IS STILL LIVE IN SYSTEM, please try again').slideDown('slow');
        },

        complete: function(data) {
            $("#ajaxInProgress").removeClass('progress');
            setTimeout(function() {
                $("#status").slideUp('slow').removeClass();
            },2000);
        }
    }); 

```

The php I post to is as follows:

```
if (isset($_POST['action'])) { 
if($_POST['action']=='makeLive') { 
    $checkappraiser=mysql_query("SELECT * FROM table WHERE id='".mysql_real_escape_string($_POST['id'])."'");
    if (mysql_numrows($checkappraiser)>0) {
        $livesetting=mysql_result($checkappraiser,0,"live");
        $livesetting=!$livesetting;
        $runSql = mysql_query("UPDATE table SET live='$livesetting' WHERE id='".mysql_real_escape_string($_POST['id'])."'");
        if(!$runSql) {
            $return['error'] = true;
        } else { 
            $return['error'] = false;   
        }
    }
}   
echo json_encode($return);
}

```

Any suggestions would be great.
I am getting the proper data passed
I am getting the correct data updated in DB
My response is coming back as a parser error because it is trying to parse the source code as a json array.