Script to sync Edge to DevPortal when there are many many devs

gistfile1.php

<?php
/*
 * This script presumes that you place the following in composer.json:
 * {
 *   "require": {
 *       "guzzlehttp/guzzle": "~4.0"
 *    }
 * }
 * and then run composer install in that directory.
 */

use GuzzleHttp\Client;

/* ==== CONFIGURATION SECTION ==== */
// What org do you want to sync?
$org = 'testorama';

// What are the credentials for an orgadmin within that org?
$user = 'user@apigee.com';
$pass = 'super-s3cret';

// What's the connection string for the database?
// Hint: look in ~/.drush/pantheon.aliases.drushrc.php
$connection = 'mysql://pantheon:password@dbserver.dev.uuid.drush.in:31337/pantheon';
/* ==== END CONFIGURATION ==== */

$parts = parse_url($connection);
$db_user = $parts['user'];
$db_pass = $parts['pass'];
$db_host = $parts['host'];
$db_port = $parts['port'];
$db_name = ltrim($parts['path'], '/');
$dsn = "mysql:host=$db_host;port=$db_port;dbname=$db_name";
$PDO = new PDO($dsn, $db_user, $db_pass, array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION));

require_once 'vendor/autoload.php';

$client = new Client([
  'base_url' => ['https://api.enterprise.apigee.com/v1/o/{org}/', ['org' => $org]],
  'defaults' => [
    'headers' => ['Accept' => 'application/json'],
    'auth' => [$user, $pass],
    'allow_redirects' => true,
  ],
]);

$response = $client->get('developers');
$edge_developers = json_decode($response->getBody(), TRUE);

$drupal_developers = array();

$j = 0;
$total = count($edge_developers);

$uid = $PDO->query('SELECT value FROM sequences')->fetchColumn();

$mail_query = $PDO->prepare('SELECT uid FROM users WHERE mail = :mail OR name = :name');
$users_query = $PDO->prepare('INSERT INTO users (uid, name, pass, mail, created, status, init, uuid) VALUES (:uid, :name, :pass, :mail, UNIX_TIMESTAMP(), :status, :init, UUID())');
$fn_data_query = $PDO->prepare('INSERT INTO field_data_field_first_name (entity_type, bundle, deleted, entity_id, revision_id, language, delta, field_first_name_value) VALUES (\'user\', \'user\', 0, :uid, :vid, \'und\', 0, :name)');
$fn_rev_query = $PDO->prepare('INSERT INTO field_revision_field_first_name (entity_type, bundle, deleted, entity_id, revision_id, language, delta, field_first_name_value) VALUES (\'user\', \'user\', 0, :uid, :vid, \'und\', 0, :name)');
$ln_data_query = $PDO->prepare('INSERT INTO field_data_field_last_name (entity_type, bundle, deleted, entity_id, revision_id, language, delta, field_last_name_value) VALUES (\'user\', \'user\', 0, :uid, :vid, \'und\', 0, :name)');
$ln_rev_query = $PDO->prepare('INSERT INTO field_revision_field_last_name (entity_type, bundle, deleted, entity_id, revision_id, language, delta, field_last_name_value) VALUES (\'user\', \'user\', 0, :uid, :vid, \'und\', 0, :name)');

foreach ($edge_developers as $edge_developer) {
  $j++;
  $response = $client->get('developers/' . rawurlencode($edge_developer));
  $details = json_decode($response->getBody(), TRUE);

  $mail_query->execute([':mail' => $edge_developer, ':name' => $details['userName']]);
  $row = $mail_query->fetchObject();
  if ($row) {
    fputs(STDERR, "[$j/$total] Skipping $edge_developer; already in database.\n");
    continue;
  }

  $users_query->execute([
    ':uid' => $uid,
    ':name' => $details['userName'],
    ':pass' => user_password(),
    ':mail' => $edge_developer,
    ':status' => ($details['status'] == 'active' ? 1 : 0),
    ':init' => $edge_developer,
  ]);
  $fn_data_query->execute([
    ':uid' => $uid,
    ':vid' => $uid,
    ':name' => $details['firstName'],
  ]);
  $fn_rev_query->execute([
    ':uid' => $uid,
    ':vid' => $uid,
    ':name' => $details['firstName'],
  ]);
  $ln_data_query->execute([
    ':uid' => $uid,
    ':vid' => $uid,
    ':name' => $details['lastName'],
  ]);
  $ln_rev_query->execute([
    ':uid' => $uid,
    ':vid' => $uid,
    ':name' => $details['lastName'],
  ]);

  echo "[$j/$total] Processed $edge_developer\n";
  $uid++;
}
$PDO->exec('UPDATE sequences SET value = ' . $uid);
echo "Done!\n";
exit;

function user_password() {
  $allowable_characters = 'abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789';
  $len = strlen($allowable_characters) - 1;
  $pass = '';
  for ($i = 0; $i < 10; $i++) {
    $pass .= $allowable_characters[mt_rand(0, $len)];
  }
  return $pass;
}