Error Codes

The following table lists most of the available code diagnostics.

Diagnostics

Message

id	title	description
`PHP6601`	Name can be simplified	The name can be written in a shorter or simpler form.

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
`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.
`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

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

Warning

id	title	description
`PHP6505`	PHPDocInvalidTypeUsed

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`.