I have a calls which help me display json directly in html table.

Json2Table::formatContent($json);

The code of Json2Table class is here

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/**
 * Class convert Json to html table. It help view json data directly.
 * @author shiv
 *
 */
class Json2Table
{

    public static function formatContent($content, $class = 'table table-bordered')
    {
        $html = "";
        if ($content != null) {
            $arr = json_decode(strip_tags($content), true);
            
            if ($arr && is_array($arr)) {
                $html .= self::arrayToHtmlTableRecursive($arr, $class);
            }
        }
        return $html;
    }

    public static function arrayToHtmlTableRecursive($arr, $class = 'table table-bordered')
    {
        $str = "<table class='$class'><tbody>";
        foreach ($arr as $key => $val) {
            $str .= "<tr>";
            $str .= "<td>$key</td>";
            $str .= "<td>";
            if (is_array($val)) {
                if (! empty($val)) {
                    $str .= self::arrayToHtmlTableRecursive($val, $class);
                }
            } else {
                $val = nl2br($val);
                $str .= "<strong>$val</strong>";
            }
            $str .= "</td></tr>";
        }
        $str .= "</tbody></table>";
        
        return $str;
    }
}