phanalist

E0005: Capitalized Class Name

In plain English: Class names (and by extension interfaces, traits, and enums) should start with an uppercase letter (PascalCase / StudlyCase).

Why it matters: PSR-4 autoloading and PHP standards convention rely on class names starting with an uppercase letter to distinguish class references from functions or variables. It keeps the codebase consistent and predictable.

❌ The Bad Example

class paymentProcessor {
    // ...
}

✅ The Good Example

class PaymentProcessor {
    // ...
}

What the rule checks

• Inspects the declaration of every PHP class.
• Verifies that the first letter of the class name is uppercase (is_uppercase()).

When it does not report

• When the class name starts with a capital letter (PaymentProcessor, UserRepository, etc.).

How to fix

• Capitalize the first letter of the class name.
• Ensure the filename matches the class name according to your project’s naming conventions (e.g., PaymentProcessor.php).

Configuration

E0005 has no configuration options and is enabled by default.

Junior Engineer’s Rule of Thumb:

Functions and variables are camelCase (getUser). Classes are PascalCase (UserProcessor). Always capitalize your class names!

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