The launch post for php_clickhouse 0.6.0 covered the framing: native binary protocol, soft fork of the stalled SeasClick, modern ClickHouse types, 30-40% faster than HTTP at high throughput. That post landed April 25, 2026. Today (May 1, 2026) the current tag is 0.8.1, and I'm calling the extension stable. The six days in between were a focused quality cycle, not a feature sprint. Three buckets: Performance. Insert and write paths build native ClickHouse columns one at a time directly from row-major input. Peak intermediate PHP memory dropped from N_rows × N_cols zvals to one column. Security. Strict full-consumption parsers across Map , narrow-int, Int128 / UInt128, geo, DateTime64, Time64, hex literals, and typed parameters. Wrong-type input throws instead of corrupting memory or coercing silently to zero. Recursive type-conversion gained a depth cap so adversarial server schemas can't blow the stack. Stability. Per-Client state moved from file-scope std::map banks onto the zend_object itself.…