Answers for "is set"

2

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 null
Posted by: Guest on January-06-2021
0

is set

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
        if (isset($_POST['...'])) {

        } else {
            echo "...";
        }
    }
Posted by: Guest on June-17-2021

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