👩🏽‍💼 👲🏼 🧑🏻 PHP摘要＃185（2020年7月20日至8月3日） 🎀 🦎 🏘️

带有新闻和资料链接的新鲜选择。在发行版中：PHP 8 Alpha 3，PhpStorm 2020.2，一个新的运算符?->，关于属性语法和其他PHP Internals新闻的另一讨论，PHP中类型系统的概述，一部分有用的工具，视频，流以及更多内容。

享受阅读！

新闻和发布

PHP 8.0.0 Alpha 3-最新计划的Alpha版本。预计将于8月6日发布第一个Beta。
PhpStorm 2020.2 — PHP 8, , - GitHub, OpenAPI. .

PHP Internals

[RFC] Shorter Attribute Syntax Change — PHP 8 . .

: << >>, @@, .

@@ , RFC . , #[ ] Rust, .

, PHP 8.1, - 8.0 4 . PHP 8.0, << >>, #[], @@, PHP 8.1 .

: @[Attribute], PHPDoc /** @@MyAttribute */, — @ @@, @ .

, @@, - , T_PAAMAYIM_NEKUDOTAYIM , - — PHP 8 Alpha 3 .
[RFC] Treat namespaced names as single token — PHP 8 . , , namespace app\function { class Foo {} } .

, , :
```
use /** Try comments */ \FullyQualified \ /* in this ugly way */ SometTotallyDifferentTrait /** also after */;
```
[RFC] Saner string to number comparisons — .

PHP 8, == , .

0 == 'foobar' false.

<=>, ==, !=, >, >=, < <=, switch, in_array(), sort() .

[RFC] Nullsafe operator — PHP 8 nullsafe: ?->.

C null.

, :


private function getUserCountry(): ?string
{
    $session = $this->sessionStorage->getSession();

    if (null === $session) {
        return null;
    }

    $user = $session->getUser();

    if (null === $user) {
        return null;
    }

    if (null === $user->address) {
        return null;
    }

    return $user->address->country;
}

$country = $this->sessionStorage->getSession()?->getUser()?->address?->country;

(@).

[RFC] Allow trailing comma in closure use lists — use PHP 8 , .


$f = function (
    $longArgument,
    $longerArgument,
    $muchLongerArgument,
) use (
    $longVar1,
    $longerVar2,
    $muchLongerVar3, //      
) {
   ...
};

[RFC] Named Arguments — PHP 8 !

, .
```
htmlspecialchars($string, ENT_COMPAT | ENT_HTML401 , ini_get("default_charset"), false);
```
:
```
htmlspecialchars($string, double_encode: false);
```
stitcher.io/blog/php-8-named-arguments.
[RFC] Renamed Parameters — . RFC.

:
```
function callBar(Foo $internalName:externalName) {
    $internalName->bar();
}

$x = new Foo();
callBar(externalName: $x);
```
- Swift. , @@NameAlias.
[RFC] Make constructors and destructors return void — .