jquery ajax没有从php解析json数据

I'm facing a strange problem for the last 10 hours and its really very annoying. The problem is with jquery printing json data from php. The php script is running fine, but when the ajax call returns in complete: event i'm not getting any valid otput.

here is the jquery code::

list_choice = "A";
content_choice = "Artists";             //globals to store default value

$(document).ready(function() {
$('.list-nav > a').click(function() {
    var ltext = $(this).text();
    list_choice = ltext;
    console.log(ltext+" <------>    ");        
        url: 'retrieveFileFront.php',
        data: {type: content_choice, navtext: list_choice},
        type: 'POST',
        dataType: 'json',            
        complete: function(data) {                
    return false;


i had to use complete: event as success: didn't worked at all. Atleast i'm getting some sort of output from the complete: event, although its giving undefined or [object][Object] which is totally ridiculous.

here is the retrieveFileFront.php:


require './retrieveFiles.php';

$type = $_POST['type'];
$nav_text = $_POST['navtext'];

$ret_files = new retrieveFiles($type, $nav_text);
$data = $ret_files->retFiles();
if ($data['success'] == FALSE) {
    $data = array('success' => FALSE, 'message' => 'Sorry an Error has occured');
    echo json_encode($data);

} else {
    echo json_encode($data);


and here is the /retrieveFiles.php


class retrieveFiles {        
    public $content_type;
    public $list_nav;
    public $connection;
    public $result;
    public $result_obj;
    public $tags_array;
    public $query;
    public $row;

    public function __construct($type, $nav_text) {            
        $this->content_type = $type;
        $this->list_nav = $nav_text;     

    public function retFiles() {

        @$this->connection = new mysqli('localhost', 'usr', 'pass', 'data');
        if(!$this->connection) {
            die("Sorry Database connection could not be made please try again later. Sorry for the inconvenience..");

        if ($this->content_type == "Artists") {                

            $this->query = "SELECT album_name, album_art FROM album_dummy NATURAL JOIN album_images_dummy WHERE artist_name LIKE '$this->list_nav%'";               

            try {
                $this->result = $this->connection->query($this->query);
                $this->row = $this->result->fetch_row();

                if (isset($this->row[0]) && isset($this->row[1])) {
                    $this->tags_array = array("success" => true, "message" => array("Album_Name" => $this->row[0], "Album_Art" => $this->row[1]));

                    return $this->tags_array;

        }   catch (Exception $e) {                
                echo 'Sorry an Error has occurred'.$e;
                return false;



I'm getting a 200 response in console in firebug, which indicates that its running okay.


{"success":true,"message":{"Album_Name":"Streetcleaner","Album_Art":"\/var\/www\/html\/MusicLibrary\/Musics\/1989 - Streetcleaner\/folder.jpg"}}

Now this is making me even more confused as i can see that the json is formatted properly. Please provide any sort of suggestion on how to solve this problem.

Thanks in advance..

2013/07/03 14:14
  • json
  • php
  • ajax
  • jquery
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