PHP webhook for github

github_webhook.php

<?php
    // utility
    function rrmdir($dir) {
        if (is_dir($dir)) {
          $objects = scandir($dir);
          foreach ($objects as $object) {
            if ($object != "." && $object != "..") {
              if (filetype($dir."/".$object) == "dir") rrmdir($dir."/".$object); else unlink($dir."/".$object);
            }
          }
          reset($objects);
          rmdir($dir);
        }
      }

    // acquire package
    $acctoken = "[REDACTED_FOR_TOKEN_SECURITY]";
    $userid = "";
    $repository = "";
    $branch = "master";

    $fcontext = fopen('package.zip', 'wb');
    $context = curl_init();

    curl_setopt_array($context, [
        CURLOPT_URL => "https://api.github.com/repos/$userid/$repository/zipball/$branch",
        CURLOPT_HTTPHEADER => [
            "Authorization: token $acctoken",
            "User-Agent: WebhookEndpoint"
        ],
        CURLOPT_FILE => $fcontext,
        CURLOPT_FOLLOWLOCATION => true,
        CURLOPT_SSL_VERIFYHOST => false,
        CURLOPT_SSL_VERIFYPEER => false
    ]);

    curl_exec($context);
    curl_close($context);

    fclose($fcontext);

    // unzip and update package
    $zip = new ZipArchive;
    $zip_res = $zip->open("package.zip");
    if ($zip_res) {
        $zip->extractTo("package_unzip");
        $zip->close();
    } else {
        echo "failed";
    }