世界上最奇怪的错误（PHP $ _GET，$ _POST，$ _REQUEST和ajax）

Question

I hope you'll able to help me. I'm fed up of trying things without any solution and php it's just driving me crazy. I'm looking for help because I have a html document where I use ajax thanks to jquery api. Inside this file, in a js function I have:

$.ajax({ type: "GET", url: "c.php", data: "dia="+matriz[0]+"&mes="+matriz[1]+"&ano="+matriz[2]+"&diaa="+matriz2[0]+"&mess="+matriz2[1]+"&anoo="+matriz2[2]+"&modo=0&semana=0", success: Mundo, error: function(e){ alert('Error: ' + e); } });

This code allows me to send the information that I want to the file c.php where I have:

include('funciones.php'); include('config.php');

 $mierda = array();
 $mierda[0] = $_GET['modo']; 
 $mierda[1] = $_GET['dia']; 
 $mierda[2] = $_GET['mes']; 
 $mierda[3] = $_GET['ano']; 
 $mierda[4] = $_GET['diaa']; 
 $mierda[5] = $_GET['mess']; 
 $mierda[6] = $_GET['anoo']; 
 $mierda[7] = $_GET['semana'];   

As you see it's very simple. My crazy problem is that with firebug I've seen that the data is sent well but for some reason I can't use it. I have tried with $_Get, $_post and $_request and always is the same problem. But this can be stranger... If I put:

echo json_encode($mierda);

then miraculously, the php returns the data that I have passed so in conclusion I have:

1. I can send the data to the php file well
2. I can print all the data that I have sent well just accessing yo $_GET, $_POST, $_REQUEST
3. I can't use any value separatly like $_GET['dia']

What's going wrong there?

PS. The include php files are functions that access to my database so there's no interaction with them.

Answer 1

If you are returning a json value use json to read that.

See http://api.jquery.com/jQuery.getJSON/

http://pinoytech.org/blog/post/How-to-Use-JSON-with-jQuery-AJAX

Here is an example to read json value

$('document').ready(function(){
    $('#submit).click(function(){
        $.post('your_php_page.php', {employee_id: '456'},
            function(data){
                console.log(data.first_name);
                console.log(data.last_name);
            }, 'json');
    })
});

Hope it helps