PHP Changed Behavior

Contents:

• No Abstract Private Method In Traits
• Accessing Trait Resources Directly Is Not Allowed
• Anonymous Class Name Includes Extends
• array_key_exists() doesn’t work on objects
• Negative Automatic Index From Empty Array
• Automatic Index In Non Empty Array
• Array Usage With String Initialisation
• array_product() New Checks
• array_sum() Checks Operands More Thoroughly
• assert() Throws Exception
• Backed Enum Values Needed To Compile
• Bitshift And Concat Precedence
• Boolean Used As Array
• Calling Non-Static Method Statically
• Accessing Directly Properties In Trait
• Cannot Call Traits Methods Directly
• Catch Without Variable
• ceil() Strict Mode
• class_alias() Works On Internal Classes
• ::class On Object
• Can Clone Readonly Properties
• compact() Throws Notice On Missing Variable
• Interface Imported Constant Visibility Is Checked
• Constants In Trait
• Parameter Contravariance
• count() Must Count Countable
• Returntype Covariance
• Creating Object On Null
• cUrl Moved Away From Resource
• Array Syntax With Curly Braces Are No More
• datetime With Multiple Signs
• Die And Exit As Functions
• Dot And Bitshift Priority
• Dot And Minus Changed Precedence
• Dot And Plus Changed Precedence
• Duplicate Static Definition
• Dynamic Class Constant
• No Dynamic Properties By Default
• E_STRICT Is Deprecated
• Enforcing Native PHP ReturnType
• explode() Forbids Empty Strings
• Cannot Explode() Null
• file_get_contents() Needs A Real Path
• FilessytemIterator Skips Dot Files
• Final Class Constants
• Final Method In Trait
• Finfo Moved Away From Resource
• Float Used As Array
• func_get_arg() Changed Behavior
• get_called_class() Cannot Be Called Outside A Class
• get_class() Needs An Argument
• $GLOBALS Assignement
• Heredoc Syntax In An Array
• Default Values With htmlspecialchars()
• Implicit Array Key Conversion
• Implicit Nullable
• implode() Arguments Order
• in_array() String Int Comparisons
• in_array() Doesn’t Confuse 0 And Empty String
• Increment On Boolean Is Deprecated
• Inegality Comparisons
• Init Readonly Properties In Child
• instanceof Expect Objects
• Integer Used As Array
• Interface Constant Visibility Checks
• Calling Static Methods On Strings
• Integer Non-silent Conversion
• Base Conversion Reports Invalid Characters
• iterator_count() Also Count Arrays
• jsonSerialize Must Have Return Type
• Keywords In Namespace
• krsort() Places Integers Before Strings In Keys
• ksort() now uses regular sorting
• ksort() Now Places Integers Before Strings
• Duplicate Enum Cases Are Not Linted Anymore
• Covariance And Contravariance Are Fatal
• match Is Now A Keyword
• No Max() On Empty Array
• max() Must Contain At Least One Element
• max() On String And Integer
• No min() On Empty Array
• min() Doesn’t Accept Empty Arrays
• mixed Is Now A Keyword
• Nested Attributes
• newver Is Now A Keyword
• New Cases In Switch
• Call Method On New
• __sleep() Method Enforces Return Type
• Non Static Method Called Statically
• No Reference To $GLOBALS Variable
• Null Used As Array
• Old Style Constructors
• Orphaned Parent
• $php_errormsg has been removed
• Plus And Concat Precedence
• printf() Warns About Unknown Formats
• range() Lists Everything Between Strings
• range() With Int And String
• (real) Is Replaced By (float)
• Relative Callable In Strings
• Relaxed Naming With Class Constant
• Return Reference On Void
• PHP native return types are now enforced
• round() Mode Validation
• __set_state() Method Must Be Static
• setlocale() Does Not Affect Echo Anymore
• sort() Places Integers Before Strings
• Sorting Closure Must Return Integers
• Spaces In Namespaces
• spaceship Operator Results
• SplFixedArray Is Now An IteratorAggregate
• static Cannot Be Used Anymore In Callable Arrays
• Static Variables Are Linked To Their Method
• Storage Of Static Properties Trait
• Static Variable Accepts Functioncalls As Default
• str_replace() Checks For Arguments
• str_replace() On Arrays Of Objects
• str_replace() Enforces Strings In Array Argument
• String To Integer Comparison
• Strings Are Bigger Than Integers
• strpos() With Out-Of-Range Offset Is A Fatal Error
• strpos() Emits TypeError
• strpos() Emits ValueError
• strpos() Does Not Accept False
• strpos() Does Not Accept Null As Second Parameter
• strsplit() With Empty String
• str_split() Throws ValueError With Negative Lengths
• substr() Returns Empty String On Out Of Bond Offset
• switch() Changed Comparison Style
• Tentative Static Returntype With Datetime
• Ternary Associativity
• throw Is An Expression
• Trailing Comma In Arguments
• Trailing Comma In Calls
• Constants In Traits
• Typed Class Constant
• Undefined Constants
• Unpack Arrays In Arrays
• Unpack Array With String Keys
• unserialize() max_depth Option
• unserialize() Error Report
• (unset) Was Removed
• var_export() Format
• var_export() With Stdclass
• version_compare() Stricter Operators
• vsprint() Requires An Array
• vsprintf() Returns Empty String On Error
• Yield Must Use Integer Or String Keys
• Cannot Raise Zero To Negative Powers