Online PHP editor | output for SLp8J

@ 2017-07-14T00:10:10Z

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

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

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

$current_url_sub_domains = strrev( $current_url_host_rev );

echo $main_url_host_rev;

Output for 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 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: moc.elpmaxe
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 moc.elpmaxe

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