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Slevomat Coding Standard for PHP_CodeSniffer provides many useful sniffs
slevomat[READ-ONLY] The Easiest way to start using PHP CS Fixer and PHP_CodeSniffer with 0-knowledge
symplify[DEPRECATED] Object Calisthenics rules for PHP_CodeSniffer
object-calisthenicsDevelopment repository for the Symfony coding standard
djoosCoding Standard rules for PHP projects with focus on Clean Architecture
symplifyThe Easiest way to add coding standard to your PHP project
easy-coding-standard