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beberlei/lazy.php Secret

Last active Nov 12, 2019
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class User
public $id;
public $username;
public $email;
$user = new User();
$user->id = 1234;
register_lazy_listener($user, ['username', 'email], function ($object, $lazyProperties, $accessedProperty) {
$sql = 'SELECT username, email FROM user WHERE id = ?';
$stmt = $pdo->prepare($sql);
$stmt->bindParam(1, $object->id);
$row = $stmt->fetch(PDO::FETCH_ASSOC);
// $row with {"username": "user1234", ..."} for id: 1234
$object->username = $row['username'];
$object->email = $row['email'];
return LAZY_UNREGISTER; // LAZY_KEEP? or always unregister when accessed?
echo $user->username; // makes magic sql query and prints "user1234"
echo $user->email; // no magic anymore here, the property is initialized
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