PHPmetrics is a static analysis tool designed for PHP code, providing insights into the code’s complexity, maintainability, and overall quality. It helps developers by analyzing various aspects of their PHP projects and generating reports that visualize metrics. This is especially useful for evaluating large codebases and identifying technical debt.

Key Features of PHPmetrics:

1. Code Quality Metrics: Measures aspects like cyclomatic complexity, lines of code (LOC), and coupling between classes.
2. Visualizations: Creates charts and graphs that show dependencies, class hierarchy, and architectural overview, making it easy to spot problematic areas.
3. Reports: Generates detailed HTML reports with insights on code maintainability, enabling developers to track quality over time.
4. Benchmarking: Compares project metrics with industry standards or previous project versions.

It’s commonly integrated into continuous integration workflows to maintain high code quality throughout the development lifecycle.

By using PHPmetrics, teams can better understand and manage their code's long-term maintainability and overall health.