PHP post如何在foreach循环中获取选项的值以显示选定的值

<form method="post" action="">
    <select name="options[]" multiple>
        <option value="option1">Option 1</option>
        <option value="option2">Option 2</option>
        <option value="option3">Option 3</option>
    </select>
    <input type="submit" value="Submit">
</form>

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    if (isset($_POST["options"])) {
        $selectedOptions = $_POST["options"];
        foreach ($selectedOptions as $option) {
            echo "Selected option: " . $option . "<br>";
        }
    } else {
        echo "No options selected.";
    }
}
?>