3v4l.org

run code in 300+ PHP versions simultaneously

@ 2021-12-15 21:46:29

<?php

$haystack = [-6, 0, 5, 10, 11, 12, 20];

$needles = [0, 3, 14, -3];

function getNearest($needle, $haystack) {
    if (!$haystack) {
        throw new Exception('empty haystack');
    }
    $bestDistance = PHP_INT_MAX;
    foreach ($haystack as $value) {
        if ($value === $needle) {
            return $needle;
        }
        $distance = abs($value - $needle);
        if ($distance < $bestDistance) {
            $bestDistance = $distance;
            $keep = $value;
        }
    }
    return $keep ?? $value; // coalesc to silence potential IDE complaint
}

foreach ($needles as $needle) { // each test case
    echo "$needle -> " . getNearest($needle, $haystack) . "\n";
}

Output for 7.3.13 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.4, 8.3.6 - 8.3.18, 8.4.1 - 8.4.5: 0 -> 0 3 -> 5 14 -> 12 -3 -> -6
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 0 -> 0 3 -> 5 14 -> 12 -3 -> -6

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27.29 ms | 412 KiB | 5 Q