PHP8 の改良された機能の恩恵を受けるのはどのプロジェクトですか?

// 在PHP8中启用JIT编译器
php --jit on

// 示例1：使用JIT编译器进行快速排序
function quickSort(&$arr) {
    if (count($arr) <= 1) {
        return $arr;
    }
    
    $pivot = $arr[0];
    
    $left = $right = [];
    for ($i = 1; $i < count($arr); $i++) {
        if ($arr[$i] < $pivot) {
            $left[] = $arr[$i];
        } else {
            $right[] = $arr[$i];
        }
    }
    
    return array_merge(quickSort($left), [$pivot], quickSort($right));
}

// 示例2：使用JIT编译器计算斐波那契数列
function fibonacci($n) {
    if($n <= 1) {
        return $n;
    }
    
    return fibonacci($n - 1) + fibonacci($n - 2);
}

$start = microtime(true);
quickSort($arr); // 快速排序
$end = microtime(true);
echo "快速排序执行时间：" . ($end - $start) . "秒";

$start = microtime(true);
fibonacci(30); // 计算斐波那契数列
$end = microtime(true);
echo "斐波那契数列执行时间：" . ($end - $start) . "秒";

interface Loggable {
    public function log($message);
}

$logger = new class implements Loggable {
    private $logFile = 'app.log'; // 属性的初始值设定器
    
    public function log($message) {
        file_put_contents($this->logFile, $message, FILE_APPEND);
    }
};

$logger->log("Log message");

function calculateDiscount(float $price, ?int $discount): float {
    if ($discount === null) {
        return $price;
    }
    
    return $price * (1 - ($discount / 100));
}

$total = calculateDiscount(100, '10');
echo "Total: $" . $total;

function divide($a, $b) {
    try {
        if ($b === 0) {
            throw new Exception("除数不能为0");
        }
        
        return $a / $b;
    } catch (Exception $e) {
        echo "出现错误：" . $e->getMessage();
    } finally {
        echo "无论是否发生异常，这里的代码都会执行";
    }
}

echo divide(10, 0);

// 使用WeakMap实现私有属性和方法
class MyClass {
    private WeakMap $privateData;
    
    public function __construct() {
        $this->privateData = new WeakMap();
    }
    
    public function setPrivateData(object $object, $value) {
        $this->privateData[$object] = $value;
    }
    
    public function getPrivateData(object $object) {
        return $this->privateData[$object];
    }
}

$myClass = new MyClass();
$object = new stdClass();

$myClass->setPrivateData($object, "Private data");
echo $myClass->getPrivateData($object);

// Union Types的示例
function processInput(int|float|null $input): void {
    if ($input === null) {
        echo "输入为空";
    } elseif (is_int($input)) {
        echo "输入为整数：" . $input;
    } elseif (is_float($input)) {
        echo "输入为浮点数：" . $input;
    }
}

processInput(10);
processInput(10.5);
processInput(null);