Question

I’ve the following array in PHP:

$user_data = Array
(
    [session_id] => 30a6cf574ebbdb11154ff134f6ccf4ea
    [ip_address] => 127.0.0.1
    [user_agent] => Mozilla/5.0 (Windows NT 5.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1
    [last_activity] => 1326795168
    [user_id] => 1
    [username] => praditha
    [logged_in] => 1
    [user_status] => 1
    [email] => [e-mail]
)

and then in javaScript, I encode that array to json using:

var userData = '<?php echo json_encode($user_data); ?>';

and I using firebug to see userData value and this is the result:

"{"session_id":"30a6cf574ebbdb11154ff134f6ccf4ea","ip_address":"127.0.0.1","user_agent":"Mozilla/5.0 (Windows NT 5.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1","last_activity":1326795168,"user_id":"1","username":"praditha","logged_in":true,"user_status":"1","email":"[e-mail]"}"

and the question is how di I access the array of userData ?
For example I wanna get the username of the userData.

Answer 1

Since you wrapped your json_encode output in quotes, $userData is a string instead of an object. Losing the quotes will create a Javascript object:

var userData = <?php echo json_encode($user_data); ?>;
alert(userData.username);