javascript - PHP, MYSQL & JSON -

ok, i'm using ajax pull information mysql database , put onto screen. thing cannot understand json life of me. can suggest tutorials or help?

i mean can encode query via json guess it's javascript side not understand.

here's quick tutorial:

json means expressing data arrays, objects, , contents. has nothing object behaviour (methods).

<?php class test {     public $hello = 'hello';     public $something = array('hello1', 'hello2');      public __construct() {      }      public void printhello() {         echo $this->hello;     } } ?> 

this class in json like:

var obj = {    "hello": "hello",    "something": ["hello1", "hello2"]  }; 

as can see, json similar maps in lot of languages (key/value pairs). can see, data represented. json shorthand javascript builtins. example, previous object can written in javascript so.

   var obj = new object();    obj.hello = "hello";    obj.something = new array("hello1", "hello2"); 

hope gives little idea of json about.