Instant Upgrades and Automated Refactoring of any PHP 5.3+ code. It upgrades your code for PHP 7.4, 8.0 and beyond. Rector promises a low false-positive rate because it looks for narrowly defined AST (abstract syntax tree) patterns. The main use-case are tackling technical debt in your legacy code and removing dead code. Rector provides a set of special rules for Symfony, Doctrine, PHPUnit, and many more.
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