"php is the best language in the world", it never stops moving forward! The PHP team has currently released PHP 8.1.0 RC 5 version, and the next version will be the sixth and final release candidate (RC 6), which will be released in the near future. Let me introduce to you the 8 important new changes in PHP8.1, let’s take a look first!
1、Enums
enum Status { case draft; case published; case archived; public function color(): string { return match($this) { Status::draft => 'grey', Status::published => 'green', Status::archived => 'red', }; } }
class PostData { public function __construct( public readonly string $title, public readonly string $author, public readonly string $body, public readonly DateTimeImmutable $createdAt, public readonly PostState $state, ) {} }
class PostStateMachine { public function __construct( private State $state = new Draft(), ) { } }
4、Fibers, a.k.a. "green threads")
$fiber = new Fiber(function (): void { $valueAfterResuming = Fiber::suspend('after suspending'); // … }); $valueAfterSuspending = $fiber->start(); $fiber->resume('after resuming');
5、Array unpacking also supports string keys
$array1 = ["a" => 1]; $array2 = ["b" => 2]; $array = ["a" => 0, ...$array1, ...$array2]; var_dump($array); // ["a" => 1, "b" => 2]
function foo(int $a, int $b) { /* … */ } $foo = foo(...); $foo(a: 1, b: 2);
function generateSlug(HasTitle&HasId $post) { return strtolower($post->getTitle()) . $post->getId(); }
8、New array_is_list function(The new array_is_list function)
$list = ["a", "b", "c"]; array_is_list($list); // true $notAList = [1 => "a", 2 => "b", 3 => "c"]; array_is_list($notAList); // false $alsoNotAList = ["a" => "a", "b" => "b", "c" => "c"]; array_is_list($alsoNotAList); // false
This article is a translation, original address: https://stitcher.io/blog/php-81-in-8-code-blocks