Retrieve the port component

# Uri\WhatWg\Url::getPort

(PHP 8 >= 8.5.0)

Uri\WhatWg\Url::getPort — Retrieve the port component

### 说明

public function Uri\WhatWg\Url::getPort(): ?int

Retrieves the port component.

### 参数

此函数没有参数。

### 返回值

Returns the port component as an int if the port component exists, `null` is returned otherwise.

### 示例

示例 #1 Uri\WhatWg\Url::getPort() basic example

    <?php
    $url = new \Uri\WhatWg\Url("https://example.com:443");

    echo $url->getPort();
    ?>

以上示例会输出：

    443

### 参见

- Uri\WhatWg\Url::withPort() - Modify the port component
- Uri\Rfc3986\Uri::getPort() - Retrieve the normalized port component

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