I tested my profiler using https://gist.github.com/Girgias/e21b57cff72b8d05be06883d98552ee6 . The profiler is slightly modified to get information about which opcode is how much used. https://github.com/sj-i/php-profiler/tree/experiment-opcode-tracer
php --version
PHP 7.4.8 (cli) (built: Jul 27 2020 03:41:09) ( ZTS )
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Zend Engine v3.4.0, Copyright (c) Zend Technologies
with Zend OPcache v7.4.8, Copyright (c), by Zend Technologies