Online PHP editor | output for jA24X

@ 2018-12-09T19:55:14Z

<?php

    $arr = [20, 1, 5, 10, 7, 16];

    $keys = array_keys($arr);
    $nearest = max($arr) - min($arr) + 1;
    $result = [];

    for($key = 0, $length = count($arr); $key < $length; $key++){

        for($innerKey = $key + 1; $innerKey < $length; $innerKey++){

            if( ($diff = abs($arr[$keys[$key]] - $arr[$keys[$innerKey]])) < $nearest){
                $result = [$arr[$keys[$key]], $arr[$keys[$innerKey]]];
                $nearest = $diff;

            }

        }

    }

    print_r($result);

?>

Output for 5.6.38, 7.0.33, 7.1.25 - 7.1.33, 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: Array ( [0] => 5 [1] => 7 )
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 Array ( [0] => 5 [1] => 7 )

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