Beautify JSON, copied from http://pastebin.com/xB0fG9py

gistfile1.php

<?php
/**
 * @author Marcelius 'mardagz' Dagpin
 * @name Beautify JSON
 * @copyright 2012
 * @uses /
 * $json_array = array(
 *      "name" => "mardagz",
 *      "gender" => "lalaki po akow hihihi",
 *      "age" => 40
 * );
 * 
 * $json_data = json_encode($json_array);
 * 
 * print $json->beautify_json($json_data);
 * 
 */
 
class PRETTY_JSON{
    
    function beautify_json($json) { 
        $tab = "  "; 
        $new_json = ""; 
        $indent_level = 0; 
        $in_string = false; 
    
        $json_obj = json_decode($json); 
    
        if($json_obj === false) 
            return false; 
    
        $json = json_encode($json_obj); 
        $len = strlen($json); 
    
        for($c = 0; $c < $len; $c++) 
        { 
            $char = $json[$c]; 
            switch($char) 
            { 
                case '{': 
                case '[': 
                    if(!$in_string) 
                    { 
                        $new_json .= $char . "\n" . str_repeat($tab, $indent_level+1); 
                        $indent_level++; 
                    } 
                    else 
                    { 
                        $new_json .= $char; 
                    } 
                    break; 
                case '}': 
                case ']': 
                    if(!$in_string) 
                    { 
                        $indent_level--; 
                        $new_json .= "\n" . str_repeat($tab, $indent_level) . $char; 
                    } 
                    else 
                    { 
                        $new_json .= $char; 
                    } 
                    break; 
                case ',': 
                    if(!$in_string) 
                    { 
                        $new_json .= ",\n" . str_repeat($tab, $indent_level); 
                    } 
                    else 
                    { 
                        $new_json .= $char; 
                    } 
                    break; 
                case ':': 
                    if(!$in_string) 
                    { 
                        $new_json .= ": "; 
                    } 
                    else 
                    { 
                        $new_json .= $char; 
                    } 
                    break; 
                case '"': 
                    if($c > 0 && $json[$c-1] != '\\') 
                    { 
                        $in_string = !$in_string; 
                    } 
                default: 
                    $new_json .= $char; 
                    break;                    
            } 
        } 
    
        return $new_json; 
    } 
}

$json = new PRETTY_JSON();
?>