Online PHP editor | output for O8XeV

@ 2017-07-14T00:12:35Z

<?php
$current_url_host = 'sub.miao.example.com';
$main_url_host = 'example.com';

$current_url_host_rev = strrev( $current_url_host );
$main_url_host_rev    = strrev( $main_url_host );

$current_url_sub_domains_rev = '';
if ( strpos( $current_url_host_rev, $main_url_host_rev ) === 0 ) {
    $current_url_sub_domains_rev = trim( substr( $current_url_host_rev, strlen($main_url_host_rev) ), '.');
}

echo strrev($current_url_sub_domains_rev);

Output for 7.0.0 - 7.0.31, 7.1.0 - 7.1.21, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: sub.miao
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 sub.miao

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