filo - no-extension call tracer for PHP
Trace & debug your PHP app. No Xdebug, no extensions
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filo is a zero-extension call tracer for PHP. Record any request, explore it as a flamegraph and call tree, or pause it live and inspect variables at a breakpoint.
PH · launched Sep 16, 2026 · 2 upvotes (top 26%) · 0 views
Niche: software debugging tools · 80 launches, 5 in the last 7 days ▼ -50% · Explore this niche →
Category and tags
- Horizontal
- Dev tools
- Developer
- Not AI
- Hobby / open-source project
- Developer Tools
- GitHub
- Tech
Visit website ↗ Source listing ↗
More like this: all 80 launches in software debugging tools →
Could you build this?
No Building a zero-extension tracer that pauses live PHP execution and inspects variables requires deep Zend engine internals knowledge or low-level OS profiling primitives.
What it would actually take: A real implementation requires either dynamic AST rewriting via PHP-Parser to inject execution hooks and fiber-like stepping loops, or low-level systems tracing using eBPF, ptrace, and procfs to inspect process memory. The architecture involves an instrumentation daemon written in C or Rust that coordinates with the PHP runtime and streams call trees over WebSockets to a flamegraph frontend. This requires deep systems programming and PHP runtime internals expertise that cannot be vibe-coded.
Competitors
Other products that read as similar to this one : 23 launches clear the similarity bar, closest 8 shown.
Attention rank: #13 of 24 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 280 days after the earliest competitor.
- GNU grep as a PHP extension · hn · 2026-04-10 · 32 upvotes · similarity 0.41
- Filozy · ph · 2026-09-15 · 1 upvotes · similarity 0.41
- Fibo · github · 2026-09-19 · 285 upvotes · similarity 0.39
- Rust compiler in PHP emitting x86-64 executables · hn · 2026-03-01 · 66 upvotes · similarity 0.36
- PHP 8 disable_functions bypass PoC · hn · 2026-03-03 · 29 upvotes · similarity 0.35
- Zefaro · ph · 2026-11-10 · 1 upvotes · similarity 0.35
- debug_bubble · ph · 2026-11-12 · 2 upvotes · similarity 0.34
- php2shell-poc · github · 2026-10-21 · 19 upvotes · similarity 0.34
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