PHP Error Handling

Priority: P0 (CRITICAL)

Structure

See implementation examples for directory layout.

Build Exception Hierarchies

• Exception-Driven: Favor throwing exceptions over returning false or null for error states.
• Custom Exceptions: Extend RuntimeException or LogicException for domain-specific errors.
• Multi-Catch: Use Union types in catch blocks: catch (DomainException | InvalidArgumentException $e).

See implementation examples for domain exception hierarchy with multi-catch and finally.

Configure Global Error Handling