PSRbased

PSRbased is an adjective used in software development to describe projects, libraries, or components that adhere to PHP Standards Recommendations (PSRs) defined by the PHP Framework Interop Group (PHP-FIG). A PSRbased project follows published standards to promote interoperability and predictable integration across PHP codebases.

The PSR family covers autoloading, coding style, and common interfaces. Core examples include PSR-1 Basic Coding Standard, PSR-2 and PSR-12 coding style guidelines, PSR-4 autoloading, and interfaces such as PSR-3 (logging), PSR-7 (HTTP messages), PSR-11 (container), PSR-15 (server request handlers), PSR-16 (simple cache), PSR-17 (HTTP factory), and PSR-18 (HTTP client). Projects often implement PSR interfaces or rely on PSR-compatible packages to ensure components can be swapped with minimal changes.

Benefits and practice. Adhering to PSRs improves interoperability, makes components more reusable, and simplifies testing and maintenance across teams and projects. In practice, PSRbased code commonly uses Composer for dependency management, declares PSR-related packages (for example, psr/log, psr/http-message, psr/container), and adopts PSR-4 autoloading. It also encourages clear contracts between components through standardized interfaces and data structures.

Limitations and identification. Adoption is voluntary and varies by project, and some teams balance strict adherence with performance or design considerations. To determine if a project is PSRbased, look for references to PSR standards in documentation, inspect composer.json for PSR-related packages and autoload configuration, and review source code for usage of PSR interfaces under the corresponding namespaces.