Online PHP editor | refs for M4Pfa

@ 2022-08-14T16:30:27Z

<?php

$a = [1, 2, 3, 4, 3, 2, 1];

$j = count($a) - 1;

$output = [];

for($i = 0; $i > count($a); $i++) {
    //echo $a[i] ."  ". $a[$j];
   if ($a[$i] !== $a[$j]) {
       $output = $a[$i];
   } 
   
   $j--;
}

print_r($output);