Online PHP editor | output for TliEB

@ 2015-06-08T18:25:55Z

<?php

function first(/* [(array $array, $key) | $value]... */)
{
    $count = func_num_args();

    for ($i = 0; $i < $count - 1; $i++)
    {
        $arg = func_get_arg($i);

        if (!isset($arg))
        {
            continue;
        }

        if (is_array($arg))
        {
            $key = func_get_arg($i + 1);

            if (is_null($key) || is_string($key) || is_int($key) || is_float($key) || is_bool($key))
            {
                if (isset($arg[$key]))
                {
                    return $arg[$key];
                }

                $i++;
                continue;
            }
        }

        return $arg;
    }

    if ($i < $count)
    {
        return func_get_arg($i);
    }

    return null;
}

$test = array();

echo $test ? 'truthy' : 'empty', "\r\n";
echo first(array($test[0], 0), '$test[0][0] is not set'), "\r\n";
echo $test ? 'truthy' : 'empty', "\r\n";

Output for 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: empty Warning: Undefined array key 0 in /in/TliEB on line 46 empty
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 empty Warning: Undefined array key 0 in /in/TliEB on line 46 empty
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33: empty Notice: Undefined offset: 0 in /in/TliEB on line 46 empty
Output for 7.3.32 - 7.3.33: empty empty
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17: empty Notice: Undefined offset: 0 in /in/TliEB on line 46 empty

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