MASS Registered User Deletion

$wua_str_snip_path = $modx->config['base_path'] . "assets/snippets/";
include_once $wua_str_snip_path."weblogin/weblogin.common.inc.php";

$wua_str_output = '';

// Access control
if ( !$modx->isMemberOfWebGroup( array( 'Administrator' ) ) ) {
  return $wua_str_output;
}

// Do we have any probationary users?
$wua_arr_probationary_users = $modx->getIntTableRows( 'webuser', 'web_groups', 'webgroup=4' );
if ( count( $wua_arr_probationary_users ) == 0 ) {
  unset( $wua_arr_probationary_users );

  return $wua_str_output;
}

// Do we have entries to approve?
if ( count( $_POST ) > 1 ) {
  $wua_arr_approved_users = array();
  foreach( $wua_arr_probationary_users as $wua_arr_user ) {
    if ( $_POST[$wua_arr_user['webuser'].'/approved'] ) {
      $wua_arr_this_user = $modx->getWebUserInfo( $wua_arr_user['webuser'] );
      
      // Update user membership
      $modx->updIntTableRow( array( 'webgroup' => 1 ), 'web_groups', 'webuser='.$wua_arr_this_user['id'] );

      // Generate password
      $wua_str_password = webLoginGeneratePassword();
      
      // Update user password
      $wua_sql = "UPDATE ".$modx->getFullTableName( "web_users" )."
                SET password=md5('".$wua_str_password."')
                WHERE id=".$wua_arr_this_user['id'].";";
      $wua_rs = $modx->db->query( $wua_sql );
      if( !$wua_rs ) {
          $wua_str_output .= webLoginAlert( "An error occured while attempting to update the password." );

          unset( $wua_str_password );
          unset( $wua_arr_approved_users );
          unset( $wua_arr_this_user );
          unset( $wua_arr_user );

          return $wua_str_output;
      }

      // send email notification
      $wua_rt = webUserApprovalSendNewPassword( $wua_arr_this_user['email'],
                                            $wua_arr_this_user['username'],
                                            $wua_str_password,
                                            $wua_arr_this_user['fullname'] );
      if ( $wua_rt !== true ) { // an error occured
        $wua_str_output .= $wua_rt;

        unset( $wua_str_password );
        unset( $wua_arr_approved_users );
        unset( $wua_arr_this_user );
        unset( $wua_arr_user );

        return $wua_str_output;
      }       $wua_arr_approved_users[] = $wua_arr_this_user['username'];
    }
  }
  if ( count( $wua_arr_approved_users ) > 0 ) {
    $wua_str_output .= '
    <p>The following users have been approved as members: '.implode( ', ', $wua_arr_approved_users ).'</p>';
  }
  unset( $wua_str_password );
  unset( $wua_arr_approved_users );
  unset( $wua_arr_this_user );
  unset( $wua_arr_user );
  
  // Reload list
  unset( $wua_arr_probationary_users );
  $wua_arr_probationary_users = $modx->getIntTableRows( 'webuser', 'web_groups', 'webgroup=4' );
  if ( count( $wua_arr_probationary_users ) == 0 ) {
    unset( $wua_arr_probationary_users );

    return $wua_str_output;
  }
}

// Form with list of probationary users
$wua_str_output = '
    <form id="WebRegisterForm" method="post" action="'.$modx->makeURL( $modx->documentIdentifier ).'">
      <fieldset>
        <legend>The following probationary users are awaiting approval:</legend>
        <table>
          <tr>
            <th scope="col">Username</th>
            <th scope="col">Real name</th>
            <th scope="col">Email address</th>
          </tr>';
foreach( $wua_arr_probationary_users as $wua_arr_user ) {
  $wua_arr_this_user = $modx->getWebUserInfo( $wua_arr_user['webuser'] );
  $wua_str_output .= '
          <tr>
            <th scope="row">'.$wua_arr_this_user['username'].'</th>
            <td>'.$wua_arr_this_user['fullname'].'</td>
            <td>'.$wua_arr_this_user['email'].'</td>
            <td><input class="checkbox" type="checkbox" name="'.$wua_arr_this_user['id'].'/approved" /></td>
          </tr>';
}
$wua_str_output .= '
        </table>
      </fieldset>
      <p class="right">
        <input class="button" type="submit" value="Submit" name="cmdwebapproval" />
        <input class="button" type="reset" value="Reset" name="cmdreset" />
      </p>
    </form>';

unset( $wua_arr_this_user );
unset( $wua_arr_user );
unset( $wua_arr_probationary_users );

return $wua_str_output;