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run code in 300+ PHP versions simultaneously

@ 2015-10-27T08:36:12Z

<?php

$orders = array(1,2,3,4,5);
$index = 2;
$newOrder = 1; // 3,1,2,4,5
function reorder($index, $newOrder, $orders) {
    $newOrders = array();
    $newOrders[$index] = $newOrder;
    $oldOrder = $orders[$index];
    $lowers = array();
    $uppers = array();
    $direction = 0;

    foreach ($orders as $i => $v) {
        if ($i < $index) {
            $lowers[] = $i;
        }
        
        if ($i > $index) {
            $uppers[] = $i;
        }
        
        if ($i === $index) {
            $direction = $i - $newOrder;
        }
    }
    if ($direction > 0) {
        foreach ($lowers as $i => $v) {
            $newOrders[$v] = $orders[$v] + 1;
        }
        foreach ($uppers as $i => $v) {
            $newOrders[$v] = $orders[$v];
        }
    } else {
        foreach ($uppers as $i => $v) {
            $newOrders[$v] = $orders[$v] - 1;
        }
        foreach ($lowers as $i => $v) {
            $newOrders[$v] = $orders[$v];
        }
    }
    //ksort($newOrders);
    var_dump($newOrders);
    
}

reorder($index, $newOrder, $orders);

Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 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 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: array(5) { [2]=> int(1) [0]=> int(2) [1]=> int(3) [3]=> int(4) [4]=> int(5) }
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(5) { [2]=> int(1) [0]=> int(2) [1]=> int(3) [3]=> int(4) [4]=> int(5) }

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