Display result of Pdo - php

Question

Hi i have an slight problem i'm trying top geht tow Results of My pdo query and Print Them but No such luck i've probably just Made a Stupid mistake i'm Not seeing The query seems to be finde so it does make a difference if the name is in the database (and it makes a difference if you put it in quotes) probably the variables are getting a null value or something...
$username="xxx";
$firstname="xxx";
$check=0;
if (isset($_GET['u'])){
$username=strip_tags(#$_GET['u']);
if (ctype_alnum($username)){
$check=$stmt=$link->prepare("SELECT * FROM
users WHERE username = ?");
$stmt->execute(array($username));
$check=$stmt->fetchAll();
if(count($check)==1){
$get=$stmt->fetch(PDO::FETCH_BOTH);
echo "$get";
$username =$get["username"];
$firstname = $get["first_name"];
}else{
echo "<h2> User does not exist!</h2>";
exit();
}
}
}
?>
<h2>Profilepage for: <?php echo "$username"; ?></h2>
<h2>First name: <?php echo "$firstname"; ?></h2

Answer 1

$stmt->fetchAll() is fetching all the results of the query. Once this is done, there are no more results available for $stmt->fetch() to fetch. You should get the data from the $check array.
if (count($check) == 1) {
$get = $check[0];
$username = $get["username"];
$firstname = $get["first_name"];
} else {
echo "<h2> Username does not exist </h2>";
exit();
}
Or you could just replace the fetchAll with fetch.
$stmt->execute(array($username));
$get = $stmt->fetch(PDO::FETCH_ASSOC);
if ($get) {
$username = $get["username"];
$firstname = $get["first_name"];
} else {
echo "<h2> Username does not exist </h2>";
exit();
}
Also, echo "$get" makes no sense. $get is an array, you can't echo it, you need to use print_r($get) or var_dump($get).