Reference: What Do These Errors in PHP Mean? (Warning, Notice, Fatal Error)

Hello everyone! I'm a beginner in PHP, and while developing my first project on the local OpenServer, I constantly encounter various error messages that are displayed on the screen or in the log. I understand that this is somehow related to the code not working correctly, but the messages themselves are a complete mystery to me. For example, I write a simple script to work with an array: ```php ``` As a result, I see something like: - `Notice: Undefined offset: 5` - `Warning: Division by zero` - `Fatal error: Uncaught DivisionByZeroError...` (sometimes) - `Warning: include(missing_file.php): Failed to open stream` - Some