what is set
SET: Can only store unique values,
And does not maintain order
- HashSet can have null, order is not guaranteed
- LinkedHashSet can have null and keeps the order
- TreeSet sorts the order and don't accept nullwhat is set
SET: Can only store unique values,
And does not maintain order
- HashSet can have null, order is not guaranteed
- LinkedHashSet can have null and keeps the order
- TreeSet sorts the order and don't accept nullis set
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
if (isset($_POST['...'])) {
} else {
echo "...";
}
}Copyright © 2021 Codeinu
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