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# Slevomat Coding Standard [](https://packagist.org/packages/slevomat/coding-standard) [](https://packagist.org/packages/slevomat/coding-standard) [](https://github.com/slevomat/coding-standard/actions?query=workflow%3ABuild+branch%3Amaster) [](https://codecov.io/gh/slevomat/coding-standard)  Slevomat Coding Standard for [PHP_CodeSniffer](https://github.com/PHPCSStandards/PHP_CodeSniffer) provides sniffs that fall into three categories: * Functional - improving the safety and behaviour of code * Cleaning - detecting dead code * Formatting - rules for consistent code looks ## Table of contents 1. [Alphabetical list of sniffs](#alphabetical-list-of-sniffs) 2. [Installation](#installation) 3. [How to run the sniffs](#how-to-run-the-sniffs) - [Choose which sniffs to run](#choose-which-sniffs-to-run) - [Exclude sniffs you don't want to run](#exclude-sniffs-you-dont-want-to-run) 4. [Fixing errors automatically](#fixing-errors-automatically) 5. [Suppressing sniffs locally](#suppressing-sniffs-locally) 6. [Contributing](#contributing) ## Alphabetical list of sniffs 🔧 = [Automatic errors fixing](#fixing-errors-automatically) 🚧 = [Sniff check can be suppressed locally](#suppressing-sniffs-locally) - [SlevomatCodingStandard.Arrays.AlphabeticallySortedByKeys](doc/arrays.md#slevomatcodingstandardarrayalphabeticallysortedbykeys) 🔧 - [SlevomatCodingStandard.Arrays.ArrayAccess](doc/arrays.md#slevomatcodingstandardarraysarrayaccess-) 🔧 - [SlevomatCodingStandard.Arrays.DisallowImplicitArrayCreation](doc/arrays.md#slevomatcodingstandardarraysdisallowimplicitarraycreation) - [SlevomatCodingStandard.Arrays.DisallowPartiallyKeyed](doc/arrays.md#slevomatcodingstandardarraysdisallowpartiallykeyed) 🚧 - [SlevomatCodingStandard.Arrays.MultiLineArrayEndBracketPlacement](doc/arrays.md#slevomatcodingstandardarraysmultilinearrayendbracketplacement-) 🔧 - [SlevomatCodingStandard.Arrays.SingleLineArrayWhitespace](doc/arrays.md#slevomatcodingstandardarrayssinglelinearraywhitespace-) 🔧 - [SlevomatCodingStandard.Arrays.TrailingArrayComma](doc/arrays.md#slevomatcodingstandardarraystrailingarraycomma-) 🔧 - [SlevomatCodingStandard.Attributes.AttributeAndTargetSpacing](doc/attributes.md#slevomatcodingstandardattributesattributeandtargetspacing-) 🔧 - [SlevomatCodingStandard.Attributes.AttributesOrder](doc/attributes.md#slevomatcodingstandardattributesattributesorder-) 🔧 - [SlevomatCodingStandard.Attributes.DisallowAttributesJoining](doc/attributes.md#slevomatcodingstandardattributesdisallowattributesjoining-) 🔧 - [SlevomatCodingStandard.Attributes.DisallowMultipleAttributesPerLine](doc/attributes.md#slevomatcodingstandardattributesdisallowmultipleattributesperline-) 🔧 - [SlevomatCodingStandard.Attributes.RequireAttributeAfterDocComment](doc/attributes.md#slevomatcodingstandardattributesrequireattributeafterdoccomment-) 🔧 - [SlevomatCodingStandard.Classes.BackedEnumTypeSpacing](doc/classes.md#slevomatcodingstandardclassesbackedenumtypespacing-) 🔧 - [SlevomatCodingStandard.Classes.ClassConstantVisibility](doc/classes.md#slevomatcodingstandardclassesclassconstantvisibility-) 🔧 - [SlevomatCodingStandard.Classes.ClassLength](doc/classes.md#slevomatcodingstandardclassesclasslength) - [SlevomatCodingStandard.Classes.ClassMemberSpacing](doc/classes.md#slevomatcodingstandardclassesclassmemberspacing-) 🔧 - [SlevomatCodingStandard.Classes.ClassStructure](doc/classes.md#slevomatcodingstandardclassesclassstructure-) 🔧 - [SlevomatCodingStandard.Classes.ConstantSpacing](doc/classes.md#slevomatcodingstandardclassesconstantspacing-) 🔧 - [SlevomatCodingStandard.Classes.DisallowConstructorPropertyPromotion](doc/classes.md#slevomatcodingstandardclassesdisallowconstructorpropertypromotion) - [SlevomatCodingStandard.Classes.DisallowLateStaticBindingForConstants](doc/classes.md#slevomatcodingstandardclassesdisallowlatestaticbindingforconstants-) 🔧 - [SlevomatCodingStandard.Classes.DisallowMultiConstantDefinition](doc/classes.md#slevomatcodingstandardclassesdisallowmulticonstantdefinition-) 🔧 - [SlevomatCodingStandard.Classes.DisallowMultiPropertyDefinition](doc/classes.md#slevomatcodingstandardclassesdisallowmultipropertydefinition-) 🔧 - [SlevomatCodingStandard.Classes.DisallowStringExpressionPropertyFetch](doc/classes.md#slevomatcodingstandardclassesdisallowstringexpressionpropertyfetch-) 🔧 - [SlevomatCodingStandard.Classes.EmptyLinesAroundClassBraces](doc/classes.md#slevomatcodingstandardclassesemptylinesaroundclassbraces-) 🔧 - [SlevomatCodingStandard.Classes.EnumCaseSpacing](doc/classes.md#slevomatcodingstandardclassesenumcasespacing-) 🔧 - [SlevomatCodingStandard.Classes.ForbiddenPublicProperty](doc/classes.md#slevomatcodingstandardclassesforbiddenpublicproperty) - [SlevomatCodingStandard.Classes.MethodSpacing](doc/classes.md#slevomatcodingstandardclassesmethodspacing-) 🔧 - [SlevomatCodingStandard.Classes.ModernClassNameReference](doc/classes.md#slevomatcodingstandardclassesmodernclassnamereference-) 🔧 - [SlevomatCodingStandard.Classes.ParentCallSpacing](doc/classes.md#slevomatcodingstandardclassesparentcallspacing-) 🔧 - [SlevomatCodingStandard.Classes.PropertyDeclaration](doc/classes.md#slevomatcodingstandardclassespropertydeclaration-) 🔧 - [SlevomatCodingStandard.Classes.PropertySpacing](doc/classes.md#slevomatcodingstandardclassespropertyspacing-) 🔧 - [SlevomatCodingStandard.Classes.RequireAbstractOrFinal](doc/classes.md#slevomatcodingstandardclassesrequireabstractorfinal-) 🔧 - [SlevomatCodingStandard.Classes.RequireConstructorPropertyPromotion](doc/classes.md#slevomatcodingstandardclassesrequireconstructorpropertypromotion-) 🔧 - [SlevomatCodingStandard.Classes.RequireMultiLineMethodSignature](doc/classes.md#slevomatcodingstandardclassesrequiremultilinemethodsignature-) 🔧 - [SlevomatCodingStandard.Classes.RequireSelfReference](doc/classes.md#slevomatcodingstandardclassesrequireselfreference-) 🔧 - [SlevomatCodingStandard.Classes.RequireSingleLineMethodSignature](doc/classes.md#slevomatcodingstandardclassesrequiresinglelinemethodsignature-) 🔧 - [SlevomatCodingStandard.Classes.SuperfluousAbstractClassNaming](doc/classes.md#slevomatcodingstandardclassessuperfluousabstractclassnaming) - [SlevomatCodingStandard.Classes.SuperfluousErrorNaming](doc/classes.md#slevomatcodingstandardclassessuperfluouserrornaming) - [SlevomatCodingStandard.Classes.SuperfluousExceptionNaming](doc/classes.md#slevomatcodingstandardclassessuperfluousexceptionnaming) - [SlevomatCodingStandard.Classes.SuperfluousInterfaceNaming](doc/classes.md#slevomatcodingstandardclassessuperfluousinterfacenaming) - [SlevomatCodingStandard.Classes.SuperfluousTraitNaming](doc/classes.md#slevomatcodingstandardclassessuperfluoustraitnaming) - [SlevomatCodingStandard.Classes.TraitUseDeclaration](doc/classes.md#slevomatcodingstandardclassestraitusedeclaration-) 🔧 - [SlevomatCodingStandard.Classes.TraitUseSpacing](doc/classes.md#slevomatcodingstandardclassestraitusespacing-) 🔧 - [SlevomatCodingStandard.Classes.UselessLateStaticBinding](doc/classes.md#slevomatcodingstandardclassesuselesslatestaticbinding-) 🔧 - [SlevomatCodingStandard.Commenting.AnnotationName](doc/commenting.md#slevomatcodingstandardcommentingannotationname-) - [SlevomatCodingStandard.Commenting.DeprecatedAnnotationDeclaration](doc/commenting.md#slevomatcodingstandardcommentingdeprecatedannotationdeclaration) - [SlevomatCodingStandard.Commenting.DisallowCommentAfterCode](doc/commenting.md#slevomatcodingstandardcommentingdisallowcommentaftercode-) 🔧 - [SlevomatCodingStandard.Commenting.DisallowOneLinePropertyDocComment](doc/commenting.md#slevomatcodingstandardcommentingdisallowonelinepropertydoccomment-) 🔧 - [SlevomatCodingStandard.Commenting.DocCommentSpacing](doc/commenting.md#slevomatcodingstandardcommentingdoccommentspacing-) 🔧 - [SlevomatCodingStandard.Commenting.EmptyComment](doc/commenting.md#slevomatcodingstandardcommentingemptycomment-) 🔧 - [SlevomatCodingStandard.Commenting.ForbiddenAnnotations](doc/commenting.md#slevomatcodingstandardcommentingforbiddenannotations-) 🔧 - [SlevomatCodingStandard.Commenting.ForbiddenComments](doc/commenting.md#slevomatcodingstandardcommentingforbiddencomments-) 🔧 - [SlevomatCodingStandard.Commenting.InlineDocCommentDeclaration](doc/commenting.md#slevomatcodingstandardcommentinginlinedoccommentdeclaration-) 🔧 - [SlevomatCodingStandard.Commenting.RequireOneLineDocComment](doc/commenting.md#slevomatcodingstandardcommentingrequireonelinedoccomment-) 🔧 - [SlevomatCodingStandard.Commenting.RequireOneLinePropertyDocComment](doc/commenting.md#slevomatcodingstandardcommentingrequireonelinepropertydoccomment-) 🔧 - [SlevomatCodingStandard.Commenting.UselessFunctionDocComment](doc/commenting.md#slevomatcodingstandardcommentinguselessfunctiondoccomment-) 🔧 - [SlevomatCodingStandard.Commenting.UselessInheritDocComment](doc/commenting.md#slevomatcodingstandardcommentinguselessinheritdoccomment-) 🔧 - [SlevomatCodingStandard.Complexity.Cognitive](doc/complexity.md#slevomatcodingstandardcomplexitycognitive) - [SlevomatCodingStandard.ControlStructures.AssignmentInCondition](doc/control-structures.md#slevomatcodingstandardcontrolstructuresassignmentincondition) - [SlevomatCodingStandard.ControlStructures.BlockControlStructureSpacing](doc/control-structures.md#slevomatcodingstandardcontrolstructuresblockcontrolstructurespacing-) 🔧 - [SlevomatCodingStandard.ControlStructures.DisallowContinueWithoutIntegerOperandInSwitch](doc/control-structures.md#slevomatcodingstandardcontrolstructuresdisallowcontinuewithoutintegeroperandinswitch-) 🔧 - [SlevomatCodingStandard.ControlStructures.DisallowEmpty](doc/control-structures.md#slevomatcodingstandardcontrolstructuresdisallowempty) - [SlevomatCodingStandard.ControlStructures.DisallowNullSafeObjectOperator](doc/control-structures.md#slevomatcodingstandardcontrolstructuresdisallownullsafeobjectoperator) - [SlevomatCodingStandard.ControlStructures.DisallowShortTernaryOperator](doc/control-structures.md#slevomatcodingstandardcontrolstructuresdisallowshortternaryoperator-) 🔧 - [SlevomatCodingStandard.ControlStructures.DisallowTrailingMultiLineTernaryOperatorSniff](doc/control-structures.md#slevomatcodingstandardcontrolstructuresdisallowtrailingmultilineternaryoperator-) 🔧 - [SlevomatCodingStandard.ControlStructures.DisallowYodaComparison](doc/control-structures.md#slevomatcodingstandardcontrolstructuresdisallowyodacomparison-) 🔧 - [SlevomatCodingStandard.ControlStructures.EarlyExit](doc/control-structures.md#slevomatcodingstandardcontrolstructuresearlyexit-) 🔧 - [SlevomatCodingStandard.ControlStructures.JumpStatementsSpacing](doc/control-structures.md#slevomatcodingstandardcontrolstructuresjumpstatementsspacing-) 🔧 - [SlevomatCodingStandard.ControlStructures.LanguageConstructWithParentheses](doc/control-structures.md#slevomatcodingstandardcontrolstructureslanguageconstructwithparentheses-) 🔧 - [SlevomatCodingStandard.ControlStructures.NewWithParentheses](doc/control-structures.md#slevomatcodingstandardcontrolstructuresnewwithparentheses-) 🔧 - [SlevomatCodingStandard.ControlStructures.NewWithoutParentheses](doc/control-structures.md#slevomatcodingstandardcontrolstructuresnewwithoutparentheses-) 🔧 - [SlevomatCodingStandard.ControlStructures.RequireMultiLineCondition](doc/control-structures.md#slevomatcodingstandardcontrolstructuresrequiremultilinecondition-) 🔧 - [SlevomatCodingStandard.ControlStructures.RequireMultiLineTernaryOperator](doc/control-structures.md#slevomatcodingstandardcontrolstructuresrequiremultilineternaryoperator-) 🔧 - [SlevomatCodingStandard.ControlStructures.RequireNullCoalesceEqualOperator](doc/control-structures.md#slevomatcodingstandardcontrolstructuresrequirenullcoalesceequaloperator-) 🔧 - [SlevomatCodingStandard.ControlStructures.RequireNullCoalesceOperator](doc/control-structures.md#slevomatcodingstandardcontrolstructuresrequirenullcoalesceoperator-) 🔧 - [SlevomatCodingStandard.ControlStructures.RequireNullSafeObjectOperator](doc/control-structures.md#slevomatcodingstandardcontrolstructuresrequirenullsafeobjectoperator-) 🔧 - [SlevomatCodingStandard.ControlStructures.RequireShortTernaryOperator](doc/control-structures.md#slevomatcodingstandardcontrolstructuresrequireshortternaryoperator-) 🔧 - [SlevomatCodingStandard.ControlStructures.RequireSingleLineCondition](doc/control-structures.md#slevomatcodingstandardcontrolstructuresrequiresinglelinecondition-) 🔧 - [SlevomatCodingStandard.ControlStructures.RequireTernaryOperator](doc/control-structures.md#slevomatcodingstandardcontrolstructuresrequireternaryoperator-) 🔧 - [SlevomatCodingStandard.ControlStructures.RequireYodaComparison](doc/control-structures.md#slevomatcodingstandardcontrolstructuresrequireyodacomparison-) 🔧 - [SlevomatCodingStandard.ControlStructures.UselessIfConditionWithReturn](doc/control-structures.md#slevomatcodingstandardcontrolstructuresuselessifconditionwithreturn-) 🔧 - [SlevomatCodingStandard.ControlStructures.UselessTernaryOperator](doc/control-structures.md#slevomatcodingstandardcontrolstructuresuselessternaryoperator-) 🔧 - [SlevomatCodingStandard.Exceptions.DeadCatch](doc/exceptions.md#slevomatcodingstandardexceptionsdeadcatch) - [SlevomatCodingStandard.Exceptions.DisallowNonCapturingCatch](doc/exceptions.md#slevomatcodingstandardexceptionsdisallownoncapturingcatch) - [SlevomatCodingStandard.Exceptions.ReferenceThrowableOnly](doc/exceptions.md#slevomatcodingstandardexceptionsreferencethrowableonly-) 🔧🚧 - [SlevomatCodingStandard.Exceptions.RequireNonCapturingCatch](doc/exceptions.md#slevomatcodingstandardexceptionsrequirenoncapturingcatch-) 🔧 - [SlevomatCodingStandard.Files.FileLength](doc/files.md#slevomatcodingstandardfilesfilelength) - [SlevomatCodingStandard.Files.LineLength](doc/files.md#slevomatcodingstandardfileslinelength) - [SlevomatCodingStandard.Files.TypeNameMatchesFileName](doc/files.md#slevomatcodingstandardfilestypenamematchesfilename) - [SlevomatCodingStandard.Functions.ArrowFunctionDeclaration](doc/functions.md#slevomatcodingstandardfunctionsarrowfunctiondeclaration-) 🔧 - [SlevomatCodingStandard.Functions.DisallowArrowFunction](doc/functions.md#slevomatcodingstandardfunctionsdisallowarrowfunction) - [SlevomatCodingStandard.Functions.DisallowEmptyFunction](doc/functions.md#slevomatcodingstandardfunctionsdisallowemptyfunction) - [SlevomatCodingStandard.Functions.DisallowNamedArguments](doc/functions.md#slevomatcodingstandardfunctionsdisallownamedarguments) - [SlevomatCodingStandard.Functions.DisallowTrailingCommaInCall](doc/functions.md#slevomatcodingstandardfunctionsdisallowtrailingcommaincall-) 🔧 - [SlevomatCodingStandard.Functions.DisallowTrailingCommaInClosureUse](doc/functions.md#slevomatcodingstandardfunctionsdisallowtrailingcommainclosureuse-) 🔧 - [SlevomatCodingStandard.Functions.DisallowTrailingCommaInDeclaration](doc/functions.md#slevomatcodingstandardfunctionsdisallowtrailingcommaindeclaration-) 🔧 - [SlevomatCodingStandard.Functions.FunctionLength](doc/functions.md#slevomatcodingstandardfunctionsfunctionlength) - [SlevomatCodingStandard.Functions.NamedArgumentSpacing](doc/functions.md#slevomatcodingstandardfunctionsnamedargumentspacing-) 🔧 - [SlevomatCodingStandard.Functions.RequireArrowFunction](doc/functions.md#slevomatcodingstandardfunctionsrequirearrowfunction-) 🔧 - [SlevomatCodingStandard.Functions.RequireMultiLineCall](doc/functions.md#slevomatcodingstandardfunctionsrequiremultilinecall-) 🔧 - [SlevomatCodingStandard.Functions.RequireSingleLineCall](doc/functions.md#slevomatcodingstandardfunctionsrequiresinglelinecall-) 🔧 - [SlevomatCodingStandard.Functions.RequireTrailingCommaInCall](doc/functions.md#slevomatcodingstandardfunctionsrequiretrailingcommaincall-) 🔧 - [SlevomatCodingStandard.Functions.RequireTrailingCommaInClosureUse](doc/functions.md#slevomatcodingstandardfunctionsrequiretrailingcommainclosureuse-) 🔧 - [SlevomatCodingStandard.Functions.RequireTrailingCommaInDeclaration](doc/functions.md#slevomatcodingstandardfunctionsrequiretrailingcommaindeclaration-) 🔧 - [SlevomatCodingStandard.Functions.StaticClosure](doc/functions.md#slevomatcodingstandardfunctionsstaticclosure-) 🔧 - [SlevomatCodingStandard.Functions.StrictCall](doc/functions.md#slevomatcodingstandardfunctionsstrictcall) - [SlevomatCodingStandard.Functions.UnusedInheritedVariablePassedToClosure](doc/functions.md#slevomatcodingstandardfunctionsunusedinheritedvariablepassedtoclosure-) 🔧 - [SlevomatCodingStandard.Functions.UnusedParameter](doc/functions.md#slevomatcodingstandardfunctionsunusedparameter-) 🚧 - [SlevomatCodingStandard.Functions.UselessParameterDefaultValue](doc/functions.md#slevomatcodingstandardfunctionsuselessparameterdefaultvalue-) 🚧 - [SlevomatCodingStandard.Namespaces.AlphabeticallySortedUses](doc/namespaces.md#slevomatcodingstandardnamespacesalphabeticallysorteduses-) 🔧 - [SlevomatCodingStandard.Namespaces.DisallowGroupUse](doc/namespaces.md#slevomatcodingstandardnamespacesdisallowgroupuse) - [SlevomatCodingStandard.Namespaces.FullyQualifiedClassNameInAnnotation](doc/namespaces.md#slevomatcodingstandardnamespacesfullyqualifiedclassnameinannotation-) 🔧 - [SlevomatCodingStandard.Namespaces.FullyQualifiedExceptions](doc/namespaces.md#slevomatcodingstandardnamespacesfullyqualifiedexceptions-) 🔧 - [SlevomatCodingStandard.Namespaces.FullyQualifiedGlobalConstants](doc/namespaces.md#slevomatcodingstandardnamespacesfullyqualifiedglobalconstants-) 🔧 - [SlevomatCodingStandard.Namespaces.FullyQualifiedGlobalFunctions](doc/namespaces.md#slevomatcodingstandardnamespacesfullyqualifiedglobalfunctions-) 🔧 - [SlevomatCodingStandard.Namespaces.MultipleUsesPerLine](doc/namespaces.md#slevomatcodingstandardnamespacesmultipleusesperline) - [SlevomatCodingStandard.Namespaces.NamespaceDeclaration](doc/namespaces.md#slevomatcodingstandardnamespacesnamespacedeclaration-) 🔧 - [SlevomatCodingStandard.Namespaces.NamespaceSpacing](doc/namespaces.md#slevomatcodingstandardnamespacesnamespacespacing-) 🔧 - [SlevomatCodingStandard.Namespaces.ReferenceUsedNamesOnly](doc/namespaces.md#slevomatcodingstandardnamespacesreferenceusednamesonly-) 🔧 - [SlevomatCodingStandard.Namespaces.RequireOneNamespaceInFile](doc/namespaces.md#slevomatcodingstandardnamespacesrequireonenamespaceinfile) - [SlevomatCodingStandard.Namespaces.UnusedUses](doc/namespaces.md#slevomatcodingstandardnamespacesunuseduses-) 🔧 - [SlevomatCodingStandard.Namespaces.UseDoesNotStartWithBackslash](doc/namespaces.md#slevomatcodingstandardnamespacesusedoesnotstartwithbackslash-) 🔧 - [SlevomatCodingStandard.Namespaces.UseFromSameNamespace](doc/namespaces.md#slevomatcodingstandardnamespacesusefromsamenamespace-) 🔧 - [SlevomatCodingStandard.Namespaces.UseOnlyWhitelistedNamespaces](doc/namespaces.md#slevomatcodingstandardnamespacesuseonlywhitelistednamespaces) - [SlevomatCodingStandard.Namespaces.UseSpacing](doc/namespaces.md#slevomatcodingstandardnamespacesusespacing-) 🔧 - [SlevomatCodingStandard.Namespaces.UselessAlias](doc/namespaces.md#slevomatcodingstandardnamespacesuselessalias-) 🔧 - [SlevomatCodingStandard.Numbers.DisallowNumericLiteralSeparator](doc/numbers.md#slevomatcodingstandardnumbersdisallownumericliteralseparator-) 🔧 - [SlevomatCodingStandard.Numbers.RequireNumericLiteralSeparator](doc/numbers.md#slevomatcodingstandardnumbersrequirenumericliteralseparator) - [SlevomatCodingStandard.Operators.DisallowEqualOperators](doc/operators.md#slevomatcodingstandardoperatorsdisallowequaloperators-) 🔧 - [SlevomatCodingStandard.Operators.DisallowIncrementAndDecrementOperators](doc/operators.md#slevomatcodingstandardoperatorsdisallowincrementanddecrementoperators) - [SlevomatCodingStandard.Operators.NegationOperatorSpacing](doc/operators.md#slevomatcodingstandardoperatorsnegationoperatorspacing-) 🔧 - [SlevomatCodingStandard.Operators.RequireCombinedAssignmentOperator](doc/operators.md#slevomatcodingstandardoperatorsrequirecombinedassignmentoperator-) 🔧 - [SlevomatCodingStandard.Operators.RequireOnlyStandaloneIncrementAndDecrementOperators](doc/operators.md#slevomatcodingstandardoperatorsrequireonlystandaloneincrementanddecrementoperators) - [SlevomatCodingStandard.Operators.SpreadOperatorSpacing](doc/operators.md#slevomatcodingstandardoperatorsspreadoperatorspacing-) 🔧 - [SlevomatCodingStandard.PHP.DisallowDirectMagicInvokeCall](doc/php.md#slevomatcodingstandardphpdisallowdirectmagicinvokecall-) 🔧 - [SlevomatCodingStandard.PHP.DisallowReference](doc/php.md#slevomatcodingstandardphpdisallowreference) - [SlevomatCodingStandard.PHP.ForbiddenClasses](doc/php.md#slevomatcodingstandardphpforbiddenclasses-) 🔧 - [SlevomatCodingStandard.PHP.OptimizedFunctionsWithoutUnpacking](doc/php.md#slevomatcodingstandardphpoptimizedfunctionswithoutunpacking) - [SlevomatCodingStandard.PHP.ReferenceSpacing](doc/php.md#slevomatcodingstandardphpreferencespacing-) 🔧 - [SlevomatCodingStandard.PHP.RequireExplicitAssertion](doc/php.md#slevomatcodingstandardphprequireexplicitassertion-) 🔧 - [SlevomatCodingStandard.PHP.RequireNowdoc](doc/php.md#slevomatcodingstandardphprequirenowdoc-) 🔧 - [SlevomatCodingStandard.PHP.ShortList](doc/php.md#slevomatcodingstandardphpshortlist-) 🔧 - [SlevomatCodingStandard.PHP.TypeCast](doc/php.md#slevomatcodingstandardphptypecast-) 🔧 - [SlevomatCodingStandard.PHP.UselessParentheses](doc/php.md#slevomatcodingstandardphpuselessparentheses-) 🔧 - [SlevomatCodingStandard.PHP.UselessSemicolon](doc/php.md#slevomatcodingstandardphpuselesssemicolon-) 🔧 - [SlevomatCodingStandard.Strings.DisallowVariableParsing](doc/strings.md#slevomatcodingstandardstringsdisallowvariableparsing) - [SlevomatCodingStandard.TypeHints.ClassConstantTypeHint](doc/type-hints.md#slevomatcodingstandardtypehintsclassconstanttypehint-) 🔧 - [SlevomatCodingStandard.TypeHints.DeclareStrictTypes](doc/type-hints.md#slevomatcodingstandardtypehintsdeclarestricttypes-) 🔧 - [SlevomatCodingStandard.TypeHints.DisallowArrayTypeHintSyntax](doc/type-hints.md#slevomatcodingstandardtypehintsdisallowarraytypehintsyntax-) 🔧 - [SlevomatCodingStandard.TypeHints.DisallowMixedTypeHint](doc/type-hints.md#slevomatcodingstandardtypehintsdisallowmixedtypehint) - [SlevomatCodingStandard.TypeHints.DNFTypeHintFormat](doc/type-hints.md#slevomatcodingstandardtypehintsdnftypehintformat-) 🔧 - [SlevomatCodingStandard.TypeHints.LongTypeHints](doc/type-hints.md#slevomatcodingstandardtypehintslongtypehints-) 🔧 - [SlevomatCodingStandard.TypeHints.NullTypeHintOnLastPosition](doc/type-hints.md#slevomatcodingstandardtypehintsnulltypehintonlastposition-) 🔧 - [SlevomatCodingStandard.TypeHints.NullableTypeForNullDefaultValue](doc/type-hints.md#slevomatcodingstandardtypehintsnullabletypefornulldefaultvalue-) 🔧🚧 - [SlevomatCodingStandard.TypeHints.ParameterTypeHint](doc/type-hints.md#slevomatcodingstandardtypehintsparametertypehint-) 🔧🚧 - [SlevomatCodingStandard.TypeHints.ParameterTypeHintSpacing](doc/type-hints.md#slevomatcodingstandardtypehintsparametertypehintspacing-) 🔧 - [SlevomatCodingStandard.TypeHints.PropertyTypeHint](doc/type-hints.md#slevomatcodingstandardtypehintspropertytypehint-) 🔧🚧 - [SlevomatCodingStandard.TypeHints.ReturnTypeHint](doc/type-hints.md#slevomatcodingstandardtypehintsreturntypehint-) 🔧🚧 - [SlevomatCodingStandard.TypeHints.ReturnTypeHintSpacing](doc/type-hints.md#slevomatcodingstandardtypehintsreturntypehintspacing-) 🔧 - [SlevomatCodingStandard.TypeHints.UnionTypeHintFormat](doc/type-hints.md#slevomatcodingstandardtypehintsuniontypehintformat-) 🔧 - [SlevomatCodingStandard.TypeHints.UselessConstantTypeHint](doc/type-hints.md#slevomatcodingstandardtypehintsuselessconstanttypehint-) 🔧 - [SlevomatCodingStandard.Variables.DisallowVariableVariable](doc/variables.md#slevomatcodingstandardvariablesdisallowvariablevariable) - [SlevomatCodingStandard.Variables.DisallowSuperGlobalVariable](doc/variables.md#slevomatcodingstandardvariablesdisallowsuperglobalvariable) - [SlevomatCodingStandard.Variables.DuplicateAssignmentToVariable](doc/variables.md#slevomatcodingstandardvariablesduplicateassignmenttovariable) - [SlevomatCodingStandard.Variables.UnusedVariable](doc/variables.md#slevomatcodingstandardvariablesunusedvariable) - [SlevomatCodingStandard.Variables.UselessVariable](doc/variables.md#slevomatcodingstandardvariablesuselessvariable-) 🔧 - [SlevomatCodingStandard.Whitespaces.DuplicateSpaces](doc/whitespaces.md#slevomatcodingstandardwhitespacesduplicatespaces-) 🔧 ## Installation The recommended way to install Slevomat Coding Standard is [through Composer](http://getcomposer.org). ```JSON { "require-dev": { "slevomat/coding-standard": "~8.0" } } ``` It's also recommended to install [php-parallel-lint/php-parallel-lint](https://github.com/php-parallel-lint/PHP-Parallel-Lint) which checks source code for syntax errors. Sniffs count on the processed code to be syntactically valid (no parse errors), otherwise they can behave unexpectedly. It is advised to run `PHP-Parallel-Lint` in your build tool before running `PHP_CodeSniffer` and exiting the build process early if `PHP-Parallel-Lint` fails. ## How to run the sniffs You can choose one of two ways to run only selected sniffs from the standard on your codebase: ### Choose which sniffs to run The recommended way is to write your own ruleset.xml by referencing only the selected sniffs. This is a sample ruleset.xml: ```xml <?xml version="1.0"?> <ruleset name="AcmeProject"> <config name="installed_paths" value="../../slevomat/coding-standard"/><!-- relative path from PHPCS source location --> <rule ref="SlevomatCodingStandard.Arrays.TrailingArrayComma"/> <!-- other sniffs to include --> </ruleset> ``` Then run the `phpcs` executable the usual way: ``` vendor/bin/phpcs --standard=ruleset.xml --extensions=php --tab-width=4 -sp src tests ``` ### Exclude sniffs you don't want to run You can also mention Slevomat Coding Standard in your project's `ruleset.xml` and exclude only some sniffs: ```xml <?xml version="1.0"?> <ruleset name="AcmeProject"> <rule ref="vendor/slevomat/coding-standard/SlevomatCodingStandard/ruleset.xml"><!-- relative path to your ruleset.xml --> <!-- sniffs to exclude --> </rule> </ruleset> ``` However it is not a recommended way to use Slevomat Coding Standard, because your build can break when moving between minor versions of the standard (which can happen if you use `^` or `~` version constraint in `composer.json`). We regularly add new sniffs even in minor versions meaning your code won't most likely comply with new minor versions of the package. ## Fixing errors automatically Sniffs in this standard marked by the 🔧 symbol support [automatic fixing of coding standard violations](https://github.com/PHPCSStandards/PHP_CodeSniffer/wiki/Fixing-Errors-Automatically). To fix your code automatically, run phpcbf instead of phpcs: ``` vendor/bin/phpcbf --standard=ruleset.xml --extensions=php --tab-width=4 -sp src tests ``` Always remember to back up your code before performing automatic fixes and check the results with your own eyes as the automatic fixer can sometimes produce unwanted results. ## Suppressing sniffs locally Selected sniffs in this standard marked by the 🚧 symbol can be suppressed for a specific piece of code using an annotation. Consider the following example: ```php /** * @param int $max */ public function createProgressBar($max = 0): ProgressBar { } ``` The parameter `$max` could have a native `int` scalar typehint. But because the method in the parent class does not have this typehint, so this one cannot have it either. PHP_CodeSniffer shows a following error: ``` ---------------------------------------------------------------------- FOUND 1 ERROR AFFECTING 1 LINE ---------------------------------------------------------------------- 67 | ERROR | [x] Method ErrorsConsoleStyle::createProgressBar() | | does not have native type hint for its parameter $max | | but it should be possible to add it based on @param | | annotation "int". | | (SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingNativeTypeHint) ``` If we want to suppress this error instead of fixing it, we can take the error code (`SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingNativeTypeHint`) and use it with a `@phpcsSuppress` annotation like this: ```php /** * @phpcsSuppress SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingNativeTypeHint * @param int $max */ public function createProgressBar($max = 0): ProgressBar { } ``` ## Contributing To make this repository work on your machine, clone it and run these two commands in the root directory of the repository: ``` composer install bin/phing ``` After writing some code and editing or adding unit tests, run phing again to check that everything is OK: ``` bin/phing ``` We are always looking forward to your bugreports, feature requests and pull requests. Thank you. ## Code of Conduct This project adheres to a [Contributor Code of Conduct](https://github.com/slevomat/coding-standard/blob/master/CODE_OF_CONDUCT.md). By participating in this project and its community, you are expected to uphold this code.