convert query String to json in php

Question

I send a QueryString formatted text like bellow to a php Script via Ajax:

title=hello&custLength=200&custWidth=300  

And I want to

Answer 1

I realize this is old, but I've found the most concise and effective solution to be the following (assuming you can't just encode the $_GET global):

parse_str('title=hello&custLength=200&custWidth=300', $parsed);

echo json_encode($parsed);

Should work for any PHP version >= 5.2.0 (when json_encode() was introduced).