PHP 配列を反転して新しい配列を形成する

<?php
$arr = [1, 2, 3, 4, 5];
$reversedArr = array_reverse($arr);

print_r($reversedArr);
?>

Array ( [4] => 5 [3] => 4 [2] => 3 [1] => 2 [0] => 1 )

<?php
$arr = [1, 2, 3, 4, 5];
$reversedArr = [];

for ($i = count($arr) - 1; $i >= 0; $i--) {
  $reversedArr[] = $arr[$i];
}

print_r($reversedArr);
?>

Array ( [0] => 5 [1] => 4 [2] => 3 [3] => 2 [4] => 1 )

$nums = [1, 3, 2, 5, 4];

<?php
$arr = [1, 3, 2, 5, 4];
$reversedArr = array_reverse($arr);

foreach ($reversedArr as $num) {
  echo "元素: $num\n";
}
?>

元素: 4
元素: 5
元素: 2
元素: 3
元素: 1