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Psalm is one of the biggest and most powerful PHP Static analysis tools, featuring exclusive features like security analysis, and in Psalm 6.9, an official, hyperoptimized Docker image was introduced.
Psalm’s docker image uses a custom build of PHP built from scratch with a custom deepbind patch and the jemalloc allocator, running Psalm +30% faster on average than normal PHP (+50% faster if comparing to PHP without opcache installed).
Recently, my deepbind patch was also merged into PHP and will be available to all users (even those not using the Docker image) in PHP 8.5!
To use it right now, on PHP 8.4, simply run:
docker run -v $PWD:/app --rm -it ghcr.io/danog/psalm:latest /composer/vendor/bin/psalm --no-cache
Issues due to missing extensions can be fixed by enabling them in psalm.xml and/or requiring them in composer.json, see here for more info.
Extensions not stubbed by Psalm itself (and thus not available as a psalm config option) may be stubbed using traditional PHP stubs.
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