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why PHP $_session is not working in wordpress my php code is

$_SESSION['lang_opt'] = $_POST['lang_opt'];
$mylang = $_SESSION['lang_opt']; 
echo $mylang;
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where are you calling this code? – Bainternet Apr 7 '12 at 11:45
are you testing this on live server? – R T Aug 7 at 11:55

1 Answer 1

Yes, you must use a small change for use session in WordPress.

if ( ! session_id() ) session_start();

Better you use a custom function

function my_start_session() {

@session_cache_limiter('private, must-revalidate'); //private_no_expire

*Please edit, I write from a mobile

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