Error Codes

The following table lists most of the available code diagnostics.

Diagnostics

Warning

id	title	description
`PHP0171`	MagicMethodMustBePublicNonStatic
`PHP0172`	CallStatMustBePublicStatic
`PHP0401`	Array index type mismatch	Index of array must be of type string or integer.
`PHP0402`	Function name type mismatch	Expression must be callable when used as an indirect function call. E.g. $name = "foo"; $name(); // $name should be callable or string
`PHP0404`	Method on non-object	Instance functions can be called only using an object instance. E.g $obj->foo(); // $obj must not be a scalar type or null, it must be an object
`PHP0405`	Not all code paths return	When function is expected to return a value, all code paths have to return and all returns have to return a value.
`PHP0406`	Argument type mismatch	Values supplied to a function call must match its arguments type.
`PHP0407`	Property on non-object	Properties can be accessed only using an object instance. E.g echo $obj->prop; // $obj must be an object
`PHP0408`	Return type mismatch	Values returned from a function must match expected type which is defined in PHPDoc @return tag or other returned values.
`PHP0409`	Scalar used as array	Expressions accessed with [] operator have to be of type array, string or object.
`PHP0410`	Type mismatch	Value has to be assignable to the expected type.
`PHP0411`	Unused label	Defined labels should be used.
`PHP0413`	Unknown class name	Class or interface is unknown.
`PHP0414`	Unknown class constant	Class constant is unknown.
`PHP0415`	Unknown constant	Global constant is unknown.
`PHP0416`	Unknown field use	Property is unknown.
`PHP0417`	Unknown function call	Global function is unknown.
`PHP0418`	Unknown method call	Class function is unknown.
`PHP0419`	Unreachable code	Code won't be called in runtime.
`PHP0420`	Infinite loop	Code contains an infinite loop and the function never exits.
`PHP0421`	Unused variable	Assigned variables should be used.
`PHP0422`	Assignment made to same variable	Assigning a variable to itself has no effect. This may indicate a potentional typo or copy-paste bug.
`PHP0423`	Missing mandatory argument	All mandatory arguments to function call have to be supplied.
`PHP0424`	Object used as array	Object accessed with [] operator has to implement ArrayAccess interface.
`PHP0431`	Division by zero
`PHP0432`	Implemented type is not an interface
`PHP0433`	Duplicit case	The case is duplicated within the switch block.
`PHP0434`	Parent class is final	Parent class is declared as final.
`PHP0435`	Method must return string	The method only allows to return string value.
`PHP0436`	MethodMustNotReturnValue
`PHP0437`	ThisInGlobalCode
`PHP0438`	NonTraversableUnpacked
`PHP0439`	PCREPatternError	There is an error in the Perl Compatible Regular Expression (PCRE) pattern.
`PHP0440`	Duplicit array key	The key is already used in the array initializer.
`PHP0441`	Arguments when there is no constructor	NewArgsWithNoConstructor
`PHP0442`	EmptyNamespaceDecl
`PHP0443`	TooManyArgs
`PHP1401`	Argument cannot be passed as alias	Only variables can be passed as aliased function argument.
`PHP1408`	VoidAssigned
`PHP1409`	VoidReturned

Error

id	title	description
`PHP1008`	InterfaceMethodWithBody
`PHP1009`	AbstractMethodWithBody
`PHP1010`	NonAbstractMethodWithoutBody
`PHP1014`	DestructCannotBeStatic
`PHP1015`	AbstractPrivateMethodDeclared
`PHP1024`	ConstructCannotBeStatic
`PHP1037`	AbstractFinalMethodDeclared
`PHP1043`	MultipleVisibilityModifiers
`PHP1045`	MethodCannotTakeArguments
`PHP1402`	NonExceptionThrown
`PHP1403`	NonExceptionCatch
`PHP1404`	NeverReturningReturnsImplicitly
`PHP1405`	WritingToGlobals
`PHP1406`	ReferencingGlobals
`PHP1407`	AbstractMethodInNonabstractClassError	`abstract` methods can be defined in `abstract` classes only.
`PHP1412`	Uninitialized variable	Variables has to be assigned before they are used.
`PHP1413`	NonStaticMethodCalledStatically
`PHP1414`	PrivateMethodDoesNotSatisfyOverride
`PHP1415`	DuplicitHookName
`PHP1416`	MemberAccess
`PHP2407`	MustNotDeclareReturnType
`PHP2408`	MustTakeExactlyArgs
`PHP2409`	UnsupportedPropertyType
`PHP2411`	NotTrait	A class or interface can't be used within the `use` clausule, only `trait` is allowed.

FatalError

id	title	description
`PHP2000`	TypeRedeclared
`PHP2001`	FunctionRedeclared
`PHP2002`	ConstantRedeclared
`PHP2014`	Syntax error	Source code contains an unexpected token and can't be parsed.
`PHP2070`	ParentAccessedInParentlessClass
`PHP2401`	New of abstract class	Instantiation of abstract class is not allowed.
`PHP2402`	New of interface	Instantiation of interface is not allowed.
`PHP2403`	Redefined label	Labels can be defined only once.
`PHP2404`	Assignment to $this	Assignment to $this variable is not allowed.
`PHP2405`	Undefined label	Used labels have to be defined.
`PHP2406`	ThisOutsideObject
`PHP2410`	TraitCreated
`PHP2412`	ParentTrait
`PHP2413`	ParentInterface
`PHP2414`	UnimplementedAbstracts
`PHP2415`	CtorPropertyInAbstractMember
`PHP2416`	CtorPropertyNotConstructor
`PHP2417`	CtorPropertyVariadic
`PHP2418`	TypeCannotBeNullable
`PHP2419`	ParameterTypeCannotBeVoid
`PHP2420`	UnsupportedUnionType
`PHP2421`	InvalidIterableDefault
`PHP2422`	UnknownNamedParam
`PHP2423`	PositionalParamAfterNamed
`PHP2424`	NamedParamOverwrites
`PHP2425`	Parameter Type Cannot Be Never	Parameters cannot have type "never", because it does not make any sense. "never" is only applicable as a function return type.
`PHP2426`	NeverReturningReturns
`PHP2427`	EnumCreated
`PHP2428`	NeedsArrayIndexForReading
`PHP2429`	ParameterTypeCannotBeStatic
`PHP2430`	CannotBeUsedAsIntersectionType
`PHP2431`	ReadOnlyPropertyMustHaveType
`PHP2432`	NamespaceMustBeTheOnlyStatement
`PHP2433`	Field already declared	Field with the same name cannot be declared more than once in the same class
`PHP2434`	BreakWrongContext
`PHP2435`	InterfaceProperty
`PHP2436`	Readonly property modified	Assigning or modifying readonly property.
`PHP2437`	OverrideNotSatisfied
`PHP2438`	OverrideVisibilityMismatch
`PHP2439`	OverrideMismatch
`PHP2440`	OverridingFinal

Compatibility Group

Message

id	title	description
`PHP6403`	Deprecated construct	Deprecated type, function or constant
`PHP6404`	Not defined in target runtime	There is no definition in current version of your runtime. Update to a version that supports it.
`PHP6405`	Removed	The definition has been removed. Do not use it anymore.
`PHP6406`	UserDeprecated
`PHP6407`	PHP4-style constructor is deprecated	PHP 4 style constructors (methods that have the same name as the class they are defined in) are deprecated, and will be removed in the future. PHP 7 will emit E_DEPRECATED if a PHP 4 constructor is the only constructor defined within a class. Classes that implement a __construct() method are unaffected.
`PHP6408`	ResourceConstant

Warning

id	title	description
`PHP6402`	Future primitive type
`PHP6409`	ArrayConstant

Error

id	title	description
`PHP6401`	Unsupported construct

PhpDoc Group

Message

id	title	description
`PHP6501`	PHPDocTagUseInstead
`PHP6502`	PHPDocTagUseInstead
`PHP6503`	PHPDocTagUseInstead
`PHP6504`	PHPDocTypeSuggestion
`PHP6506`	PHPDocNotFullyQualifiedTypeName
`PHP6510`	SuggestTagInstead

Warning

id	title	description
`PHP6505`	PHPDocInvalidTypeUsed
`PHP6507`	MissingVariableName
`PHP6508`	UnknownParameterName
`PHP6509`	InvalidExtendsImplementsType

Outlining Group

Message

id	title	description
`PHP6550`	#region missing	There is `#endregion` tag without a starting `#region` tag.
`PHP6551`	#endregion missing	A `#region` tag denotating a collapsible block is not closed with a corresponding `#endregion`.

Suggestion Group

Message

id	title	description
`PHP6601`	Name can be simplified	The name can be written in a shorter or simpler form.
`PHP6602`	MagicMethodField	The property will be handled with magic `__get` or `__set` function. It may be unintentional, because it is not declared with `@property` annotation while other properties are.
`PHP6603`	TraitExpectsParent
`PHP6604`	WrongStringConcat
`PHP6605`	OverrideIgnoredOnPrivateMethod
`PHP6606`	ClassConstViaChild
`PHP6607`	EnumereeUsedAsValue
`PHP6608`	PseudoConstOutOfContext

Error

id	title	description
`PHP6609`	PSR class name mismatches	A PSR autoload specified in the corresponding 'composer.json' dictates certain rule for class naming so it will be properly autoloaded by Composer autoload. This diagnostic check the class name will be properly autoloaded. If not, it suggests the correct name or correct file name.

CodeStyle Group

Message

id	title	description
`PHP7001`	Redundant closing tag	Files containing only PHP should not contain the closing tag `?>`. This is recommended (for example in PSR-12 code style). The reason is that the parser proceses everything after the closing tag which may cause unnecessary white spaces in the resulting HTML.