Insert webusers from excel sheet

<?php
$table = $modx->getFullTableName('web_users');
$table2 = $modx->getFullTableName('web_user_attributes');
$table3 = $modx->getFullTableName('web_groups');
// open and read csv file
$csvfile = 'path-to-csv-file';
if (($handle = fopen($csvfile, "r")) !== FALSE) {
    while (($data = fgetcsv($handle, 1000, ";")) !== FALSE) {
        // insert into web_users table and get ID
        $fields = array('username'=>$modx->db->escape($data[0])
            'password'=>md5($modx->db->escape($data[1])));
        $modx->db->insert($fields,$table);
        $insertId = $modx->db->getInsertId();
        // insert fullname, dummy email and photo into web_users_attributes table
        $fields = array('internalKey'=>$insertId,
            'fullname'=>$modx->db->escape($data[2]),
            'email'=>$modx->db->escape($data[3]));
        $modx->db->insert($fields, $table2);
        // insert into web_groups table
        $fields = array('webgroup'=>3,'webuser'=>$insertId);
        $modx->db->insert($fields, $table3);
fclose($handle);
} else { echo "<h2>Unable to open $csvfile</h2>"; }
?>

    function webLoginGeneratePassword($length = 10) {
        $allowable_characters = "abcdefghjkmnpqrstuvxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789";
        $ps_len = strlen($allowable_characters);
        mt_srand((double)microtime()*1000000);
        $pass = "";
        for($i = 0; $i < $length; $i++) {
            $pass .= $allowable_characters[mt_rand(0,$ps_len-1)];
        }
        return $pass;
    }    

    // Send new password to the user
    function webLoginSendNewPassword($email,$uid,$pwd,$ufn){
        global $modx, $site_url;
        $mailto = $modx->config['mailto'];
        $websignupemail_message = $modx->config['websignupemail_message'];    
        $emailsubject = $modx->config['emailsubject'];
        $emailsender = $modx->config['emailsender']; 
        $site_name = $modx->config['site_name'];
        $site_start = $modx->config['site_start'];
        $message = sprintf($websignupemail_message, $uid, $pwd); // use old method
        // replace placeholders
        $message = str_replace("[+uid+]",$uid,$message);
        $message = str_replace("[+pwd+]",$pwd,$message);
        $message = str_replace("[+ufn+]",$ufn,$message);
        $message = str_replace("[+sname+]",$site_name,$message);
        $message = str_replace("[+semail+]",$emailsender,$message);
        $message = str_replace("[+surl+]",$site_url,$message);
        if (!ini_get('safe_mode')) $sent = mail($email, $emailsubject, $message, "From: ".$emailsender."\r\n"."X-Mailer: Content Manager - PHP/".phpversion(), "-f {$emailsender}");
        else $sent = mail($email, $emailsubject, $message, "From: ".$emailsender."\r\n"."X-Mailer: Content Manager - PHP/".phpversion());
        if (!$sent) webLoginAlert("Error while sending mail to $mailto",1);
        return true;
    }