您有多种方式来处理表单提交，其中之一是post操作。

但首先需要创建适当的表单属性和标记，以便它正常工作，所以它应该是这样的。

HTML

<form action="<?= esc_url(admin_url(\'admin-post.php\')); ?>" method="post">
    <!-- this will "indicte" to the hook that will handle the submition -->
    <input type="hidden" name="action" value="action_my_hook_name">
    <!-- if needed you can add a nonce for security -->
    <input type="hidden" name="security" value="<?= wp_create_nonce(\'my_form_nonce\'); ?>">

    <input type="text" name="first_name" />
    <input type="text" name="last_name" />
    <input type="submit" value="Submit">
</form>

add_action(\'admin_post_action_my_hook_name\', \'action_my_hook_name\'); // logged in users
add_action(\'admin_post_nopriv_action_my_hook_name\', \'action_my_hook_name\'); // not logged in users

function action_my_hook_name () {
    // checking if nonce was submited and is valid, if not valid will exit
    check_ajax_referer(\'bt_site_nonce\', \'security\');

    // handle form submition
}