PHP2Shell: CVE-2026-109618/109619 Patch and Triage Guide

Candlestick patterns are inequalities over four numbers per row, so pandas and NumPy can detect them. Here is how to define them yourself and where that falls short.

A subdirectory-per-language layout keeps both ports findable in one place. It also moves costs into CI, releases and issue triage, and it has clear limits.

A self-contradicting predicate returns a row in Oracle 19c and 21c. The cause is an optimizer rewrite bug, and there are three ways around it.