Benchmark findAndModify with manual typeMap conversion

benchmark.php

<?php

require 'vendor/autoload.php';

function createNestedDocuments($n, $depth)
{
    $document = new stdClass;

    if ($depth < 1) {
        return $document;
    }

    foreach (range(1, $n) as $i) {
        $document->{'doc' . $i} = createNestedDocuments($n, $depth - 1);
    }

    return $document;
}

function pass(MongoDB\Collection $collection)
{
    $collection->insertOne([
        '_id' => 1,
        'a' => 'foo',
        'b' => str_repeat('b', 1024 * 1024),
        'c' => createNestedDocuments(5, 5),
        'd' => range(1, 1024),
    ]);

    $document = $collection->findOneAndDelete([]);
    echo $document ? '.' : 'x';
}

$collection = (new MongoDB\Client)->test->foo;
$collection->drop();

for ($i = 0; $i < 1000; $i++) {
    pass($collection);
}