<?php
$s = "A B C D E F G H I J K L M N O P Q R S T U V W X Y Z";
$s = explode(" ", $s);
foreach($s as $o => $x)
$s[$o] = trim($x);
$s = array_reverse($s);
foreach($s as $l)
echo $l . "\n";
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z