Online PHP editor | output for iVO6U

@ 2018-04-13T03:36:40Z

<?php

    $users_emails = array('a' => 'Spence', 'b' => 'Matt', 'c' => 'Marc', 'd' => 'Adam', 'e' => 'Paul');

    $keys = array_values(array_keys($users_emails));
    $current = 'Matt';
    $ordinal = array_search($current,$users_emails);
    $nextkey = (array_search($ordinal, $keys)+1);
    $next = $users_emails[$keys[$nextkey]];
    echo $next;

Output for 7.1.0 - 7.1.20, 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 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7: Marc
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 Marc

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