Security-related question about a possible exposed credential

[Emma-NYL]

Hello,

My name is Emma, I am conducting an academic study on possible credential exposure in public GitHub repositories.

While analyzing this repository, I found a string that may represent a credential. I'm including the code snippet below containing possible leakage. To avoid exposing sensitive information publicly, I marked the sensitive information.

Could you please help clarify whether the detected string is:

1. a real credential, or
2. a placeholder / example value?

Thank you for your time.

---

Code snippet (sensitive values masked):

<?php

class Db {
  public static function Connection($dbname){
    $dbhost="db.tur****ant.org";
    $dbuser="a****";
    $dbpass="s****";
      
    $dbConnection = new PDO("mysql:host=$dbhost;dbname=$dbname", $dbuser, $dbpass,array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES 'utf8'")); 
    $dbConnection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    return $dbConnection;

Thank you in advance for your time - I really appreciate it!

Sincerely,
Emma