PHP $_SESSION var cannot saved in mobile - php

Question

I'm develop a hybrid application and it will using PHP sessions to save user information. In my case, I tried to used php sessions to save the data, but it doesn't save. And then, to testing in web, the result var is show saved.
Here is my example:
<?php
session_start();
if(isset($_POST["Token"])){
$token = $_POST["Token"];
if (isset($_SESSION['device_token']) && $_SESSION['device_token']) {
$token = $_SESSION['device_token'];
} else {
$_SESSION['device_token'] = "notoken";
}
}
?>
Here is my PHP info:
My php Info 1
My php Info 2
Edit:
<?php
ini_set('session.save_path',$_SERVER['DOCUMENT_ROOT'] .'/phpVar');
session_start();
if(isset($_POST["Token"])){
$token = $_POST["Token"];
$_SESSION['device_token'] = $token;
}
if(isset($_GET['ID'])){
$token = $_SESSION['device_token'];
$member_id = $_GET['ID'];
$_SESSION['ID'] = $member_id;
echo $_SESSION['device_token'] ;
echo $_SESSION['ID'] ;
}
?>

Answer 1

because you missed the }
so, instead of:
if(isset($_POST["Token"])){
$token = $_POST["Token"];
should be:
if(isset($_POST["Token"])){
$token = $_POST["Token"];
}
EDIT
Ok, then try to see whether you session directory is writable:
if (!is_writable(session_save_path())) {
echo "No, it's not. Path:".session_save_path();
}
else{
echo "yes, it's writable";
}
EDIT
when path is not set, you might set it manually just before session_start
ini_set('session.save_path',getcwd(). '/tmp');
and afterwards you need to create tmp folder and give it right permission