Розумніший, швидший, створений для майбутнього.

$components = parse_url('https://php.net/releases/8.4/en.php');

var_dump($components['host']);
// string(7) "php.net"

use Uri\Rfc3986\Uri;

$uri = new Uri('https://php.net/releases/8.5/en.php');

var_dump($uri->getHost());
// string(7) "php.net"

$title = ' PHP 8.5 Released ';

$slug = strtolower(
    str_replace('.', '',
        str_replace(' ', '-',
            trim($title)
        )
    )
);

var_dump($slug);
// string(15) "php-85-released"

$title = ' PHP 8.5 Released ';

$slug = $title
    |> trim(...)
    |> (fn($str) => str_replace(' ', '-', $str))
    |> (fn($str) => str_replace('.', '', $str))
    |> strtolower(...);

var_dump($slug);
// string(15) "php-85-released"

readonly class Color
{
    public function __construct(
        public int $red,
        public int $green,
        public int $blue,
        public int $alpha = 255,
    ) {}

    public function withAlpha(int $alpha): self
    {
        $values = get_object_vars($this);
        $values['alpha'] = $alpha;

        return new self(...$values);
    }
}

$blue = new Color(79, 91, 147);
$transparentBlue = $blue->withAlpha(128);

readonly class Color
{
    public function __construct(
        public int $red,
        public int $green,
        public int $blue,
        public int $alpha = 255,
    ) {}

    public function withAlpha(int $alpha): self
    {
        return clone($this, [
            'alpha' => $alpha,
        ]);
    }
}

$blue = new Color(79, 91, 147);
$transparentBlue = $blue->withAlpha(128);

function getPhpVersion(): string
{
    return 'PHP 8.4';
}

getPhpVersion(); // No warning

#[\NoDiscard]
function getPhpVersion(): string
{
    return 'PHP 8.5';
}

getPhpVersion();
// Warning: The return value of function getPhpVersion() should
// either be used or intentionally ignored by casting it as (void)

final class PostsController
{
    #[AccessControl(
        new Expression('request.user === post.getAuthor()'),
    )]
    public function update(
        Request $request,
        Post $post,
    ): Response {
        // ...
    }
}

final class PostsController
{
    #[AccessControl(static function (
        Request $request,
        Post $post,
    ): bool {
        return $request->user === $post->getAuthor();
    })]
    public function update(
        Request $request,
        Post $post,
    ): Response {
        // ...
    }
}

$sh = curl_share_init();
curl_share_setopt($sh, CURLSHOPT_SHARE, CURL_LOCK_DATA_DNS);
curl_share_setopt($sh, CURLSHOPT_SHARE, CURL_LOCK_DATA_CONNECT);

$ch = curl_init('https://php.net/');
curl_setopt($ch, CURLOPT_SHARE, $sh);

curl_exec($ch);

$sh = curl_share_init_persistent([
    CURL_LOCK_DATA_DNS,
    CURL_LOCK_DATA_CONNECT,
]);

$ch = curl_init('https://php.net/');
curl_setopt($ch, CURLOPT_SHARE, $sh);

// This may now reuse the connection from an earlier SAPI request
curl_exec($ch);