Config.php -

Here is what a standard, well-commented configuration file looks like for a custom PHP application:

What does your hosting platform run on (Apache, Nginx, LiteSpeed)?

Once your settings are defined, you need to load them into your application. Loading Constants

Hardcoding database credentials directly into a physical config.php file introduces risks, especially if your development team uses Git or other version control systems. Accidentally pushing your production config.php file to a public GitHub repository is a frequent cause of catastrophic data breaches. config.php

store config.php inside the public web root. Place it above the web root.

Use code with caution. 2. Returning an Array (Modern Framework Method) Here is what a standard, well-commented configuration file

As applications grow, keeping all configurations in a single array or list of constants becomes unmanageable. Modern PHP architecture utilizes more robust patterns. The Array Return Pattern

600 means only the file owner can read and write to the file. Everyone else on the server is completely blocked. Once your settings are defined, you need to

Even though PHP files are normally parsed by the server, misconfigurations happen. If Apache/PHP ever fails (a temporary glitch, a .htaccess override, or a module crash), the server might serve the config.php file as . A visitor would simply visit https://example.com/config.php and see your database password, API keys, and salts—unencrypted, in plain view.