Online PHP editor | perf for KWrZo

@ 2021-01-22T23:36:51Z

<?php

$max_weight = 100;

// init with some random weights
$objects = [];
for ($i = 1; $i <= 100; $i++) {
    $objects[] = (object) ['id' => $i, 'weight' => rand(1, 50)];
}

// sort by weight, heaviest first
usort($objects, function ($a, $b) {
    return $b->weight <=> $a->weight;
});

$containers = [];
$container_number = 0;
$total_weight = 0;

while (true) {

    $container_number++;

    $container = [];
    $container_weight = 0;

    foreach ($objects as $key => $object) {
        // add this object to the container if it won't push it over the max weight
        if ($container_weight + $object->weight <= $max_weight) {
            $container[] = $object;
            unset($objects[$key]);
            $container_weight += $object->weight;
            $total_weight += $object->weight;
            if ($container_weight == $max_weight) {
                break;
            }
        }
    }

    $containers[$container_number] = $container;
    $container_contents = count($container);

    echo 'Container #' . $container_number . ' total weight: ' . $container_weight . ' (' . $container_contents . ' items)' . PHP_EOL;

    if (empty($objects)) {
        break;
    }
}

echo 'Total weight: ' . $total_weight . PHP_EOL;

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
8.0.1	0.015	0.004	17.11
8.0.0	0.013	0.007	17.03
7.4.14	0.015	0.003	16.68
7.4.13	0.012	0.006	16.52
7.4.12	0.011	0.008	16.42
7.4.11	0.014	0.004	16.66
7.4.10	0.014	0.007	16.48
7.4.9	0.006	0.012	16.50
7.4.8	0.015	0.004	16.36
7.4.7	0.011	0.008	16.34
7.4.6	0.009	0.009	16.34
7.4.5	0.006	0.011	16.29
7.4.4	0.008	0.011	16.26
7.4.3	0.028	0.013	16.59
7.4.2	0.007	0.011	16.64
7.4.1	0.009	0.009	16.43
7.4.0	0.008	0.014	16.42
7.3.26	0.007	0.011	16.48
7.3.25	0.010	0.010	16.34
7.3.24	0.014	0.010	16.51
7.3.23	0.010	0.007	16.59
7.3.22	0.020	0.003	16.39
7.3.21	0.013	0.010	16.63
7.3.20	0.012	0.006	16.55
7.3.19	0.014	0.004	16.54
7.3.18	0.009	0.009	16.37
7.3.17	0.013	0.007	16.39
7.3.16	0.007	0.013	16.65
7.3.15	0.010	0.007	16.66
7.3.14	0.013	0.006	16.57
7.3.13	0.013	0.010	16.57
7.3.12	0.011	0.011	16.69
7.3.11	0.003	0.014	16.41
7.3.10	0.010	0.007	16.59
7.3.9	0.004	0.015	16.36
7.3.8	0.010	0.007	16.34
7.3.7	0.016	0.004	16.30
7.3.6	0.010	0.007	16.42
7.3.5	0.010	0.007	16.55
7.3.4	0.013	0.004	16.45
7.3.3	0.010	0.007	16.53
7.3.2	0.014	0.007	16.31
7.3.1	0.013	0.010	16.47
7.3.0	0.003	0.018	16.31

preferences:dark modelive previewkey bindings