Zend Preparation | PHP Quiz (Learning Mode)

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If a function signature contains three parameters, for which of them may the splat operator be used?

The first parameter

The second parameter

The third parameter

All three parameters

Explanation : Arrays and Traversable objects can be unpacked into argument lists when calling functions by using the ... operator. This is also known as the splat operator in other languages, including Ruby.

<?php
function add($a, $b, $c) {
    return $a + $b + $c;
}

$operators = [2, 3];
echo add(1, ...$operators);       //   6
?>