- Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- Array ( )
<?php
$a = [1, 2, 3, 4, 3, 2, 1];
$j = count($a) - 1;
$output = [];
for($i = 0; $i > count($a); $i++) {
if ($a[i] !== $a[j]) {
$output = $a[i];
}
$j--;
}
print_r($output);