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PHP 5 MCQs

Which of the given code statements should replace ??? in the following PHP 7.1 code snippet, so that 7, 6, 5, 4, is printed as output?
function &example() {
$var = 8;
while ($var > 4) {
yield $var;
}
}
???
}
?>

foreach (example() as &$num) {

echo (--$num).', ';

foreach (num as &$example()) {

echo ($num--).', '

foreach (example() as $&num) {

echo ($num--).', ';

foreach (example() as $num) {

echo ($--num).', ';

Answer

Correct Answer:

foreach (example() as &$num) {

echo (--$num).', ';

Explanation:

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