phptop: Lightweight PHP Performance Monitoring Tool

phptop is a lightweight PHP performance monitoring tool that tracks per-query execution time (wallclock, user, and system CPU time) along with memory and other resource usage. It's easily activated globally on a LAMP server with a single line configuration change in your php.ini. It's low-resource and has been used by Bearstech in production for years without issue. Requires PHP >= 5.2.0, tested up to PHP 8.2.