2.3.7. Changed Behavior

Ruleset with all rules that identify changed behavior across PHP versions. This means that some syntax behave differently, depending on PHP version.

Total : 609 analysis

• Ambiguous Array Index

• Array Index

• True False Inconsistant Case

• Magic Constant Usage

• PHP Constant Usage

• Caught Exceptions

• Defined Exceptions

• ext/apc

• ext/bcmath

• ext/bzip2

• ext/calendar

• ext/sqlite

• ext/sqlite3

• Closures Glossary

• Recursive Functions

• Empty Interfaces

• Interfaces Usage

• Interfaces Names

• PHP Interfaces

• Aliases

• Namespaces Glossary

• Autoloading

• Use Lower Case For Parent, Static And Self

• Goto Names

• Labels

• Functions Removed In PHP 5.4

• For Using Functioncall

• No Plus One

• Throws An Assignement

• __toString() Throws Exception

• Binary Glossary

• Email Addresses

• HTTP Status Code

• All strings

• Interface Arguments

• Variable References

• Abstract Class Usage

• Variable Constants

• Empty Traits

• Redefined PHP Traits

• Traits Usage

• Trait Names

• Short Syntax For Arrays

• Unused Use

• Use With Fully Qualified Name

• Used Use

• ext/array

• Non-lowercase Keywords

• Abstract Static Methods

• Interface Methods

• Trait Methods

• Invalid Constant Name

• Multiple Constant Definition

• Wrong Optional Parameter

• Use === null

• $this Is Not An Array

• Cast Usage

• Closure May Use $this

• While(List() = Each())

• Several Instructions On The Same Line

• Function Subscripting, Old Style

• $this Belongs To Classes Or Traits

• Non-constant Index In Array

• Undefined Constants

• Custom Constant Usage

• Is An Extension Interface

• Is An Extension Constant

• Bracketless Blocks

• Undefined Class Constants

• Used Private Methods

• Unused Private Methods

• crypt() Without Salt

• mcrypt_create_iv() With Default Values

• Native Alias Functions Usage

• Unresolved Classes

• ** For Exponent

• Useless Constructor

• Unresolved Use

• Unused Constants

• Undefined static:: Or self::

• Parent, Static Or Self Outside Class

• Is Extension Trait

• Dynamically Called Classes

• Conditioned Function

• Method Is A Generator

• Use password_hash()

• Dereferencing String And Arrays

• Empty With Expression

• Use Const And Functions

• Constant Scalar Expressions

• Unreachable Code

• Must Return Methods

• Interpolation

• Empty Slots In Arrays

• Method Is Not For Fluent Interface

• PHP Handlers Usage

• Unused Methods

• Used Methods

• Overwritten Exceptions

• Direct Injection

• Return void

• Return With Parenthesis

• Unused Classes

• Used Classes

• Is PHP Constant

• Sensitive Argument

• Undefined Properties

• Short Open Tags

• Lone Blocks

• Avoid sleep()/usleep()

• PHP Keywords As Names

• Const With Array

• Namespaces

• Repeated print()

• Constants Created Outside Its Namespace

• Fully Qualified Constants

• Use This

• ext/apache

• Slow Functions

• Useless Final

• No array_merge() In Loops

• Unresolved Instanceof

• Unthrown Exception

• Magic Visibility

• No Parenthesis For Language Construct

• Unused Label

• Methodcall On New

• Used Interfaces

• Unused Interfaces

• Useless Interfaces

• Undefined Interfaces

• ext/apcu

• Should Use Prepared Statement

• Class Const With Array

• Unresolved Catch

• Reserved Keywords In PHP 7

• Could Be A Static Variable

• Empty Namespace

• Could Use Short Assignation

• Useless Abstract Class

• Scalar Typehint Usage

• Return Typehint Usage

• Global Import

• Pre-increment

• ext/amqp

• ext/php-ast

• Indices Are Int Or String

• isset() With Constant

• Is Global Constant

• Coalesce

• List With Array Appends

• Simple Global Variable

• Parenthesis As Parameter

• Foreach Don’t Change Pointer

• Unicode Escape Partial

• Directives Usage

• eval() Without Try

• No List With String

• Usort Sorting In PHP 7.0

• func_get_arg() Modified

• Register Globals

• Avoid get_class()

• Used Trait

• Unused Traits

• Wrong Parameter Type

• Redefined Methods

• Redefined Class Constants

• Redefined Default

• Wrong fopen() Mode

• Confusing Names

• PHP Bugfixes

• preg_match_all() Flag

• Safe Curl Options

• Already Parents Interface

• Use random_int()

• Cant Use Return Value In Write Context

• set_exception_handler() Warning

• Using $this Outside A Class

• Pear Usage

• Undefined Trait

• No Choice

• Exception Order

• Uncaught Exceptions

• Undefined Caught Exceptions

• GPRC Aliases

• Indirect Injection

• List With Keys

• Throw Functioncall

• Use Instanceof

• Make One Call With Array

• List Short Syntax

• Defined Parent MP

• Multiple Exceptions Catch()

• Used Protected Method

• Unused Protected Methods

• No Count With 0

• Dependant Trait

• Hidden Use Expression

• Could Use Alias

• Should Make Alias

• Multiple Identical Trait Or Interface

• Multiple Alias Definitions

• Use ::Class Operator

• Don’t Echo Error

• time() Vs strtotime()

• Unitialized Properties

• PHP 7.1 Microseconds

• Getting Last Element

• Rethrown Exceptions

• Avoid array_push()

• $GLOBALS Or global

• Close Tags Consistency

• Fetch One Row Format

• Avoid glob() Usage

• Could Be Protected Property

• Raised Access Level

• Class Function Confusion

• Forgotten Thrown

• Multiple Alias Definitions Per File

• __DIR__ Then Slash

• self, parent, static Outside Class

• Used Once Property

• Should Use session_regenerateid()

• Strange Name For Constants

• Could Be Typehinted Callable

• Encoded Simple Letters

• Too Many Finds

• Set Cookie Safe Arguments

• New Constants In PHP 7.2

• Group Use Declaration

• Displays Text

• No Class In Global

• Crc32() Might Be Negative

• Use Debug

• Could Typehint

• DI Cyclic Dependencies

• Too Many Injections

• Dependency Injection

• Courier Anti-Pattern

• Could Make A Function

• Forgotten Interface

• Manipulates NaN

• Manipulates INF

• Mkdir Default

• strict_types Preference

• Declare strict_types Usage

• Encoding Usage

• Group Use Trailing Comma

• Logical Operators Favorite

• Isset Multiple Arguments

• No Magic Method With Array

• Avoid Concat In Loop

• No Substr Minus One

• Logical To in_array

• Shell Favorite

• Could Be Protected Class Constant

• Could Be Protected Method

• Pathinfo() Returns May Vary

• Is Actually Zero

• Session Lazy Write

• Session Variables

• Cookies Variables

• Date Formats

• Simple Switch And Match

• Substring First

• Use List With Foreach

• Crypto Usage

• Php 7.2 New Class

• Avoid set_error_handler $context Argument

• Hash Will Use Objects

• Maybe Missing New

• Use PHP7 Encapsed Strings

• Type Array Index

• Dl() Usage

• Invalid Regex

• Use Named Boolean In Argument Definition

• Not A Scalar Type

• Sqlite3 Requires Single Quotes

• No Net For Xml Load

• Useless Referenced Argument

• Double array_flip()

• Foreach On Object

• Dynamic Library Loading

• PHP 7.3 Last Empty Argument

• Use Recursive count()

• Processing Collector

• Missing Parenthesis

• strpos() Too Much

• Do In Base

• Weak Typing

• Cache Variable Outside Loop

• Use The Blind Var

• Nonexistent Variable In compact()

• Mismatch Type And Default

• Flexible Heredoc

• Comparisons Orientation

• Could Be Static Closure

• move_uploaded_file Instead Of copy

• Can’t Throw Throwable

• Abstract Or Implements

• Ambiguous Visibilities

• Hash Algorithms Incompatible With PHP 7.1-

• Undefined ::class

• PHP 7.0 Scalar Typehints

• PHP 7.1 Scalar Typehints

• PHP 7.2 Scalar Typehints

• Locally Used Property In Trait

• Handle Arrays With Callback

• Use is_countable

• Detect Current Class

• Avoid Real

• Const Or Define Preference

• Constant Case Preference

• Assert Function Is Reserved

• Must Call Parent Constructor

• Undefined Insteadof

• Method Collision Traits

• Closure Could Be A Callback

• Add Default Value

• filter_input() As A Source

• Invalid Pack Format

• Repeated Interface

• No Reference For Static Property

• Printf Format Inventory

• PHP Exception

• Unreachable Class Constant

• Avoid Self In Interface

• Safe HTTP Headers

• Useless Method Alias

• Isset() On The Whole Array

• Self Using Trait

• Multiple Usage Of Same Trait

• Possible Missing Subpattern

• array_key_exists() Speedup

• ext/pcov

• Constant Dynamic Creation

• An OOP Factory

• Type Must Be Returned

• Inconsistent Variable Usage

• Self-Transforming Variables

• Caught Variable

• Implode One Arg

• Insecure Integer Validation

• Incoming Values

• Useless Default Argument

• Trait Not Found

• Concat And Addition

• Minus One On Error

• Autoappend

• Memoize MagicCall

• Regex On Arrays

• Always Use Function With array_key_exists()

• curl_version() Has No Argument

• Unused Class Constant

• Could Use Trait

• Generator Cannot Return

• Methods That Should Not Be Used

• Use Array Functions

• Avoid mb_dectect_encoding()

• mb_strrpos() Third Argument

• array_key_exists() Works On Arrays

• Reflection Export() Is Deprecated

• Numeric Literal Separator

• Class Without Parent

• Serialize Magic Method

• Scalar Are Not Arrays

• Php Native Reference Variable

• Create Compact Variables

• Propagate Constants

• No ENT_IGNORE

• Overwritten Properties

• Set Clone Link

• Create Magic Property

• Set Parent Definition

• Make Class Method Definition

• Create Default Values

• Makes Class Constant Definition

• Set Class Remote Definition With Injection

• Solve Trait Methods

• Follow Closure Definition

• Implode() Arguments Order

• Hash Algorithms Incompatible With PHP 7.4-

• No Spread For Hash

• Set Class Remote Definition With Return Typehint

• Set Class Remote Definition With Local New

• Set Class Remote Definition With Typehint

• Set Class Remote Definition With Global

• Set Class Property Definition With Typehint

• Set Array Class Definition

• Set Class Method Remote Definition

• Use Arrow Functions

• Environment Variable Usage

• Indentation Levels

• Nested Ternary Without Parenthesis

• Cyclomatic Complexity

• Use array_slice()

• Comparison Is Always The Same

• Interfaces Is Not Implemented

• No Literal For Reference

• Interfaces Don’t Ensure Properties

• Duplicate Literal

• No Weak SSL Crypto

• No mb_substr In Loop

• Collect Parameter Counts

• Collect Local Variable Counts

• Use The Case Value

• Too Many Dereferencing

• Can’t Implement Traversable

• Is_A() With String

• Filter To add_slashes()

• Typehinting Stats

• Wrong Case Namespaces

• Create Foreach Default

• Merge If Then

• Inclusions

• Typehint Order

• New Order

• Links Between Parameter And Argument

• Exceeding Typehint

• Collect Class Interface Counts

• Collect Class Depth

• Collect Class Children Count

• Coalesce Equal

• Possible Interfaces

• Php 8.0 Only TypeHints

• Uninitialized Property

• Throw Was An Expression

• Unused Trait In Class

• Keep Files Access Restricted

• Possible Alias Confusion

• Collect Property Counts

• Collect Method Counts

• Safe Phpvariables

• Extended Typehints

• Double Object Assignation

• Call Order

• Array_merge Needs Array Of Arrays

• Abstract Away

• Large Try Block

• Catch With Undefined Variable

• Fossilized Methods List

• Collect Static Class Changes

• Use PHP Attributes

• Use NullSafe Operator

• Collect Readability

• Collect Class Traits Counts

• Collect Native Calls Per Expressions

• Function With Dynamic Code

• $php_errormsg Usage

• Mismatch Parameter Name

• Multiple Declaration Of Strict_types

• Assumptions

• Collect Use Counts

• Useless Typehint

• Negative Start Index In Array

• Php Ext Stub Property And Method

• Optimize Explode()

• Unused Exception Variable

• Cancelled Parameter

• Missing __isset() Method

• Long Preparation For Throw

• Modify Immutable

• Avoid get_object_vars()

• Cannot Use Static For Closure

• Only First Byte

• Restrict Global Usage

• Inherited Static Variable

• Htmlentities Using Default Flag

• Openssl Encrypt Default Algorithm Change

• PHP Native Class Type Compatibility

• Missing Attribute Attribute

• $FILES full_path

• No Null For Native PHP Functions

• Calling Static Trait Method

• PHP Native Interfaces and Return Type

• Final Constant

• Never Typehint Usage

• PHP 8.1 Typehints

• PHP 8.0 Typehints

• Never Keyword

• Float Conversion As Index

• Nested Attributes

• Promoted Properties

• Null Type Favorite

• Variable Anf Property Typehint

• Extends stdClass

• Scope Resolution Operator

• Cant Overload Constants

• Variable Is A Local Constant

• This Could Be Iterable

• Abstract Class Constants

• Check Division By Zero

• Getter And Setter

• Multiple Similar Calls

• Use File Append

• Readonly Usage

• Missing Visibility

• Could Use Existing Constant

• Collect Dependency Extension

• Public Reach To Private Methods

• Unreachable Method

• String Int Comparison

• Add Return Typehint

• Create Magic Method

• PHP 8.1 Resources Turned Into Objects

• Do Not Cast To Int

• Constant Scalar Expression

• No Readonly Assignation In Global

• Could Set Property Default

• No Private Abstract Method In Trait

• Typehints/CouldBeResource

• New Functions In PHP 8.2

• Ip

• Could Inject Parameter

• date() versus DateTime Preference

• Unused Public Methods

• Solve Trait Constants

• No Keyword In Namespace

• Ambiguous Types With Variables

• Set Chaining Exception

• Could Use Class Operator

• Mbstring Unknown Encodings

• Named Argument And Variadic

• Coalesce And Ternary Operators Order

• Useless Assignation Of Promoted Property

• Method Property Confusion

• Could Use Namespace Magic Constant

• Incompatible Types With Incoming Values

• Method Usage

• Empty Loop

• Too Many Extractions

• Possible TypeError

• Collect Calls

• Set Method Fnp

• Type Dodging

• Skip Empty Array

• Weak Type With Array

• Filter Not Raw

• Collect SetLocale

• No Max On Empty Array

• No Empty String With explode()

• Array Access On Literal Array

• strpos() With Integers

• Unvalidated Data Cached In Session

• Ellipsis Merge

• New Functions In PHP 8.3

• Missing Assignation In Branches

• Short Ternary

• Deprecated Mb_string Encodings

• Pre-Calculate Use

• Init Then Update

• Different Constructors

• Misused Yield

• Substr() In Loops

• Php 8.3 New Classes

• Recalled Condition

• Incompatible Property Between Class And Trait

• Could Be array_combine()

• Comparison On Different Types

• No Null For Index

• Useless Try

• Class Injection Count

• Collect Property Usage

• Collect Structures

• Collect Catch Calls

• Identical Case In Switch

• StandaloneType True False Null

• Constants In Traits

• Short Or Complete Comparison

• Could Use Yield From

• Static Variable Can Default To Arbitrary Expression

• Multiline Expressions

• Append And Assign Arrays

• Property Cannot Be Readonly

• Static Variable Initialisation

• Collect Graph Triplets

• Don’t Use The Type As Variable Name

• Count() To Array Append

• Useless Trailing Comma

• Reserved Methods

• Void Is Not A Reference

• Non Integer Nor String As Index

• PHP Native Attributes

• Injectable Version

• Multiple Property Declaration

• Could Cast To Array

• Check After Null Safe Operator

• No Null With Null Safe Operator

• Invalid Cast

• Could Use strcontains()

• Could Drop Variable

• Could Be Readonly Property

• Try Without Catch

• Wrong Precedence In Expression

• Only Variable Passed By Reference

• Property Export

• File_Put_Contents Using Array Argument

• Useless NullSafe Operator

• Nested Match

• Useless Short Ternary

• Combined Calls

• Empty Json Error

• Useless Coalesce

• Count() Is Not Negative

• Exit Without Argument

• PHP 8.1 New Types

• PHP 8.2 New Types

• Variable Parameter Ambiguity In Arrow Function

• Strpos() Less Than One

2.3.7.1. Specs

Short name	ChangedBehavior
Available in	Entreprise Edition, Community Edition, Exakat Cloud