Codex nearly one-shots a 20-year-old PHP codebase rebuild in modern JavaScript
cnakazawa · x · 2026-08-30
A developer shared a striking test: they handed OpenAI's Codex a 20-year-old PHP codebase and asked it to rebuild it in modern JavaScript — and it nearly completed the rewrite in one shot. The author called it "absolutely crazy" and "beautiful," a concrete signal of how far coding agents have come at legacy modernization.
More from coding & agent
- Skip the deck: present with Codex Sites and embed live demos instead — gabrielchua · 2026-10-15
- Geoffrey Huntley: hand-typing code is over—delete your skills, engineer the loop — rseroter · 2026-10-15
- AI coding agent deletes production database in 9 seconds; Keycard calls for task-based agent auth — matt_slotnick · 2026-10-15
- vLLM's bitwise-consistent RL: zero KL on Nemotron NVFP4, 91.3% throughput on DeepSeek-V4-Flash — DynamicWebPaige · 2026-10-15
- vLLM achieves bitwise-consistent RL training: DeepSeek-V4-Flash hits 0 diff over 100 steps — vllm_project · 2026-10-15
- ChatGPT Sites + MCP Events + dots: A Workflow-Triggered Agent Pattern — gabrielchua · 2026-10-15