php array in url from json - php

Question

Here is what I want to do:
I have some json like this
var foo = {
format:"json",
type:"test",
id:"26443"
};
and I awant to put that in a url like this
'http://example.com/a:3:{s:6:"format";s:4:"json";s:4:"type";s:4:"test";s:2:"id";s:5:"26443";}'
which I will then put into ajax call but everything I have tried results in error 501 BAD URI could someone tell me how to do this
I've tried this
EDIT:
after looking again and alerting the results of this function it IS build the results correcty they just arrn't being used propler either by ajax or the browser
function js_array_to_php_array(a) {
var a_php = "";
var total = 3;
for (var key in a){
total;
a_php = a_php + "s:" + String(key).length + ":\"" + String(key) + "\";s:" + String(a[key]).length + ":\"" + String(a[key]) + "\";";
}
a_php = "a:" + total +":{" + a_php + "}";
return a_php;
}
when I use http fox it get this back
http://example.com/a:3:%7Bs:6:%22format%22;s:4:%22json%22;s:4:%22type%22;s:4:%test%22;s:2:%22id%22;s:5:%2226443%22;}
which i find odd because it ecodes everything but the last curly bracket

Answer 1

Why not just use a "normal" query string?
http://example.com/?type=test&id=26443
$type = $_GET['type'];
$id = $_GET['id'];
Unless I am missing something?

Answer 2

There is a jQuery function for this already! Use it and love it.
http://api.jquery.com/jQuery.param/

Answer 3

so as it turns out there is nothing wrong with the function js_array_to_php_array it did exactly as I needed it to the problem was that I needed to use JSONP instead of JSON when running my ajax call as I was going cross domain which also explains why the code worked in the url but not when I ran ajax
thank you all for your help

Answer 4

http://example.com/a:3:{s:6:"format";s:4:"json";s:4:"type";s:5:"test";s:2:"id";s:5:"26443";}
501 is right — that's not a valid URL. URLs definitely can't have quotes in them, or (for most part) curly brackets.
If you really have to submit a PHP literal structure in a URL without doing it as normal set of query parameters, you would have to URL-encode the invalid characters, which you can do like:
url= 'http://example.com/'+encodeURI(js_array_to_php_array(foo));
resulting in:
http://example.com/a:3:%7Bs:6:%22format%22;s:4:%22json%22;s:4:%22type%22;s:5:%22test%22;s:2:%22id%22;s:5:%2226443%22;%7D
incidentally this:
String(key)
is superfluous: object keys are always strings in JS, even if you put them in as numbers;
"\"" + String(a[key]) + "\""
is going to go wrong if the value can contain a quote or backslash, and
total;
there should surely be an increment here?

Answer 5

On the PHP end, you could use urlencode(json_encode($obj)) to convert an object to a string that can be used in a URL.
After I posted this, I realized you're trying to convert a JavaScript variable to a URL string after I saw var foo = {. Duh.