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PHP developers often use arrays for handling data, but they fall short in complex scenarios due to lack of types and visibility. Data Transfer Objects (DTOs) offer a structured alternative, clearly defining data properties and their types, which improves code readability, maintainability, and IntelliSense support. DTOs are particularly useful when handling multiple data values, either from web requests, API responses, or other data sources.

Building Maintainable PHP Applications: Data Transfer Objects