PhpMetrics is described as 'Readable & Accessible reports'. There are five alternatives to PhpMetrics for Windows, Linux, Online / Web-based, Mac and Self-Hosted solutions. The best alternative is Sourcetrail, which is both free and Open Source. Other great apps like PhpMetrics are SonarQube (Freemium, Open Source), CodeFlower (Free, Open Source), ProjectCodeMeter (Paid) and SourceMonitor (Free).
ProjectCodeMeter Is a professional software tool for project managers to measure and estimate the Time, Cost, Complexity, Quality Metrics and Maintainability of software projects as well as Development Team Productivity by analyzing their source code.