PDO Querying database through sessions - php

Question

I am trying to call data from my database to display on a users profile. I have the user session working correctly in the check user file. However the code below obviously isn; retrieving anything because it won't echo out in the echo statment i have in my HTML. Can someone please help???
require_once 'check.php';
if(isset($_GET['full_name'])){
$full_name = $_GET['full_name'];
$username = $_GET['username'];
$country = $_GET['country'];
$bio = $_GET['bio'];
$stmt = $dtb->prepare(" SELECT full_name=:full_name, username=:username, country=:country, bio=:bio FROM users WHERE id=:log_user_id AND username=:log_uname LIMIT 1");
$arr = array(
"full_name" => $full_name,
"username" => $username,
"bio" => $bio,
"country" => $country,
"log_user_id" => $log_user_id,
"log_uname" => $log_uname
);
ArrayBinder($stmt,$arr);
try{
$stmt->execute();
$dtb = null;
exit();
}
catch(PDOException $e){
echo $e->getMessage();
$dtb = null;
exit();
}
}

Answer 1

As it's absolutely IMPOSSIBLE to tell what are you trying to do from that mess you called "code" - so, just to give you an idea on the code you need to get user details from database based on id stored in a session:
$sql = "SELECT full_name,username,country,bio FROM users WHERE id=?";
$stmt = $dtb->prepare($sql);
$stmt->execute([$_SESSION['log_user_id']]);
$user = $stmt->fetch();
here in the $user array you should have name bio and stuff. Check session variable name