General

'final' modifier is redundant, property with private 'set' visibility is implicitly final: Reports a redundant final modifier used for the private(set) property.
'n' modifier can be replaced with non-capturing groups: Reports the n PCRE modifier that can be replaced with non-capturing groups in RegExp patterns.
'set' visibility can be removed: Reports a set visibility that equals property visibility and can therefore be omitted.
Argument with name identifier: Reports arguments with name identifiers.
Argument without name identifier: Reports arguments without name identifiers.
Array index is immediately rewritten: Reports the write expressions on array indexes which are immediately overwritten before being accessed.
Backed property with a 'set' hook cannot be accessed by reference: Reports an attempted indirect modification of a hooked property.
Cannot modify property outside of 'set' visibility scope: Reports a write access attempt to private(set) or protected(set) properties that are made outside of their set visibility scope.
Cannot write to a virtual property without a setter defined: Reports partial or missing property hook components, i.e., insufficiently defined virtual properties.
Class can't implement Traversable directly: Reports the classes that are implementing the Traversable interface alone, not as part of Iterator or IteratorAggregate interfaces.
Class hierarchy checks: Checks the class hierarchy: abstract methods implementation, compatibility of implementing/overriding methods with their declarations in parent classes, and property types redeclarations.
Class static member accessed via instance: Reports references to static methods and fields via a class instance rather than the class itself.
Curly brace access syntax usage: Reports the usages of curly brace syntax for accessing array elements and string offsets.
Deprecated: Reports the usages of deprecated entities.
Deprecated '${' string interpolation: Reports ${var} and ${expr} interpolations in strings.
Deprecated 'Serializable' interface usage: Reports the usages of deprecated Serializable interface.
Deprecated '__autoload()' function declaration: Reports the __autoload() function declarations.
Deprecated 'assert()' function declaration: Reports the assert() function declarations.
Deprecated 'implode/join' usage: Reports deprecated usage of the implode and join functions.
Deprecated Standard Library call: Reports the calls to Standard PHP Library functions that are deprecated starting from PHP 8.1.
Deprecated cast: Reports deprecated cast expressions: (unset) cast expressions, which are deprecated in PHP 7.2 and later.
Deprecated partially supported callables: Reports deprecated usage of callables that are supported by call_user_func($callable), but not by $callable().
Disabled extension stubs: Reports the usages of classes, functions, and constants, for which the stubs for the corresponding PHP interpreter extensions are disabled.
Doctrine annotation can be replaced with attribute: Suggests replacing Doctrine annotations with attributes.
Dynamic method called as static: Reports static calls to dynamic class methods.
Element is not available in configured PHP version: Reports the usages of entities which were introduced in PHP version later than configured one.
Getter and setter can be replaced with get and set property hooks: Reports a private property with getter and/or setter access methods that can be replaced with a public property with get and/or set property hooks.
Hooked property cannot be unset: Reports an attempt to call the unset() function on a hooked property.
Ignored class alias declaration: Reports the class alias declarations that are ignored by the IDE because the actual class declaration with the same FQN exists.
Implicitly marking parameter as nullable is deprecated: Reports deprecated usage of an implicitly nullable parameter type.
Incorrect magic method signature: Reports incompatible magic methods signatures.
Invalid magic method modifiers: Reports the magic methods that are not declared as public or are declared as static.
Language level: Reports the language features used in source code that are not supported for the selected language level.
Member reference chain is too long to analyze: Reports method reference chains that are too long for IDE to analyze.
Method declaration in parent class is incompatible with implemented interface: Reports the methods declarations in parent classes that are incompatible with implemented interfaces.
Named argument may be unresolved: Reports the named arguments in method calls that might be unresolved depending on a specific class instance within the hierarchy.
Nested ternary operator usage: Reports nested ternary expressions, which are deprecated starting from PHP 7.4.
Overriding method/extending class marked as '@final': Reports override of method or extending of class with @final in the PHPDoc.
Parameter's name changed during inheritance: Reports the methods' parameters whose names differ from the same parameters defined in parent methods.
Passing 'E_USER_ERROR' to 'trigger_error()' is deprecated since PHP 8.4: Reports passing a non-empty string as the $enclosure parameter of the CSV-related methods and functions: SplFileObject::setCsvControl() SplFileObject::fputcsv() SplFileObject::fgetcsv() fputcsv() fgetcsv() str_getcsv().
Passing 'null' or 'false' to 'dba_key_split()' is deprecated since PHP 8.4: Reports passing null or false to dba_key_split(), which is deprecated since PHP 8.4.
Passing an option of an incorrect type is deprecated since PHP 8.4: Reports passing incorrect data types for options to Hash extension functions, which is deprecated since PHP 8.4.
Promoted property usage: Reports properties declared through promoted constructor parameters.
Property can be 'readonly': Reports the private promoted properties that are never written to.
Property can be promoted: Reports the properties that can be replaced with promoted versions.
Property is immediately rewritten: Reports the write expressions on properties which are immediately overwritten before being accessed.
Raising zero to the power of negative number is deprecated since PHP 8.4: Reports raising zero to the power of a negative number, which is deprecated since PHP 8.4.
Second write to 'readonly' property: Reports reassignments of readonly properties.
Static method called as dynamic: Reports dynamic calls to static class methods.
Symfony annotation can be replaced with attribute: Suggests replacing Symfony annotations with attributes.
Unpacking arrays with string keys is forbidden for PHP < 8.1: Reports array unpacking with string keys in PHP < 8.1 See Array unpacking with string keys for details.
Unresolved include: Reports non-resolved include, include_once, require, and require_once expressions.
Usage of internal entity: Reports the usages of the entities that are marked as @internal and are located in different source roots.
Using a single underscore '_' as a class name is deprecated since PHP 8.4: Reports usage of a single underscore (_) as a class name, which is deprecated since PHP 8.4.
Visibility modifier can be removed: Reports a public visibility modifier that may be omitted for a property which has reduced set visibility specified.
Write access to 'readonly' property outside of declaration scope: Reports the write accesses to readonly properties that are made outside the declaration scope.

01 April 2025