read json value in jquery php code example

Example 1: access json with php

<?php

$data = '{
	"name": "Aragorn",
	"race": "Human"
}';

$character = json_decode($data);
echo $character->name;

Example 2: return json in php

//code igniter
$query="qry";
$query = $this->db->query($query);
$res=$query->result();
return json_encode($res);