A high-performance PHP probe implemented as a C extension for capturing distributed tracing data. It supports Zipkin and OpenTracing protocols to provide visibility into legacy and modern PHP environments.
Tech Stack
CMonitoring & Logs
Why Molten?
• Extremely low CPU overhead
• Transparent instrumentation
• Zipkin compatibility
Limitations
• Requires C compilation
• Limited documentation
• PHP version specific builds
2/15/2026
Last Update
158
Forks
56
Issues
Apache-2.0
License
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