PHP-FPM slow log entires should include the request URL

Description

To my knowledge, it's not possible to configure PHP-FPM slow logs to contain the full request URL.

This is a major problem for web applications like WordPress that utilize a front-controller pattern, where every URL maps to a single PHP script, such as wordpress/index.php.

As far as I know, cross-referencing slow log timestamps with access log timestamps is the best workaround, which is tedious and impossible for high-traffic sites, as second granularity can be insufficient, and the subsecond timestamps of the slow log and access log may not match.

まず、PHP-FPM の slow-log 生成と、リクエストが記録されるときに利用できるリクエストメタデータを追跡します。slow-log の設定がどのように表現されているかを確認し、完全なリクエスト URL のテスト可能な出力形式を定義します。slow log が timestamp を相互参照しなくても URL を特定できれば完了です。