Export WordPress Multisite to Single Site

export.php

<?php
define("GLOBAL_URL", "insert your wordpress master url here, e.g. master domain");
// Export master blog without comments - handled by Facebook plugin
exec('wp export --url="' . GLOBAL_URL . '" --skip_comments --filename_format="{site}.{date}.xml"');

$sites = shell_exec("wp site list --url=\"" . GLOBAL_URL . "\" --field=url");
$sites = explode(PHP_EOL, $sites);

foreach ($sites as $site) {
    $url = str_replace("http://", "", $site);
    $name = str_replace("/", "", substr($url, strlen(GLOBAL_URL)));

    if (strlen($name) < 1) {
        continue;
    }

    $id = str_replace(PHP_EOL, "", shell_exec('wp term create category Blogs --slug="blogs" --porcelain --url="' . $url . '"'));
    $cat = str_replace(PHP_EOL, "", shell_exec('wp term create category "$(wp option get blogname --url=' . $url . ')" --slug=' . $name . ' --parent=' . $id . ' --porcelain --url="' . $url . '"'));
    echo "Category " . $cat;

    $posts = shell_exec('wp post list --url="' . $url . '" --field=ID');
    $posts = explode("\n", $posts);

    foreach ($posts as $post) {
        $post = str_replace(PHP_EOL, "", $post);
        exec('wp post term add ' . $post . ' category $(wp term get category ' . $cat . ' --url="' . $url . '" --field=slug) --url="' . $url . '"');
    }


    // Export blog without comments - those are being handled by Facebook
    exec('wp export --url="' . $url . '" --filename_format="{site}.{date}.xml" --skip_comments');
}