PHP 8 1 Return types in PHP built in class methods and deprecation notices
PHP 8 0 started to throw fatal errors on incompatible method signatures but that was only for parameter types This change in PHP 8 1 affects return types in addition to parameters Most notably lack of a return type declaration is also considered a return type mismatch
PHP Returning values Manual, Example 1 Use of return php function square num return num num echo square 4 outputs 16 A function can not return multiple values but similar results can be obtained by returning an array Example 2 Returning an array to get multiple values php function small numbers return 0 1 2
What is never return type in PHP 8 1 Stack Overflow
1 It has no return statement defined explicitly function redirect string uri never exit return something Will prodcue PHP Fatal error A never returning function must not return 2 It has no return statement defined implicitly function redirect string uri never if false header Location uri exit
PHP Function arguments Manual, As of PHP 8 0 0 the list of function arguments may include a trailing comma which will be ignored That is particularly useful in cases where the list of arguments is long or contains long variable names making it convenient to list arguments vertically Example 2 Function Argument List with trailing Comma php function takes many args
static return type for class methods PHP 8 0 PHP Watch
static return type for class methods PHP 8 0 PHP Watch, PHP 8 0 allows static as a return type for class methods class Foo public static function getInstance static return new static PHP class methods can return self and parent in previous versions but static was not allowed in PHP versions prior to 8 0
Chapter 6 Functions
PHP rfc internal method return types
PHP rfc internal method return types PHP 8 0 added parameter and return type declarations for the vast majority of internal functions and methods Stubs initiative because the different variance related RFCs as well as the PHP RFC Consistent type errors for internal functions the PHP RFC Union Types 2 0 and the PHP RFC Mixed Type v2 RFCs made it possible to cover nearly any cases
VSCode How To Infer Function Return Types In Typescript
PHP 8 0 introduces named function parameters in addition to positional arguments PHP 8 1 introduces Fibers as interruptible functions to facilitate multi tasking PHP 8 adds new PHP 8 Functions and Methods InfoQ. PHP 8 introduces a static method return type which requires the return value to be of the type of the enclosing class PHP 8 1 introduces the never return type A function PHP 8 0 comes with support for Union Types In versions prior to PHP 8 0 you could only declare a single type for properties parameters and return types PHP 7 1 and newer versions have nullable types which means you can declare the type to be null with a type declaration similar to string
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