PDO Questions on -> & =>

Reading on pdo.

What are these for and what do they mean ? I still on procedural style programming.
->
=>

For example:

[code]
$stmt = $pdo->prepare(‘SELECT * FROM users WHERE email = ? AND status=?’);
$stmt->execute([$email, $status]);
$user = $stmt->fetch();
// or
$stmt = $pdo->prepare(‘SELECT * FROM users WHERE email = :email AND status=:status’);
$stmt->execute([’email’ => $email, ‘status’ => $status]);
$user = $stmt->fetch();
[/code]

What does this mean ?

[code]
$user = $stmt->fetch();
[/code]

Ok, it means, after fetching the result, dump it onto $user.
But what exactly “->” mean ? Does it mean “do this afterwards” or “do this after that” ?