您可以使用the_content 筛选挂钩以使用登录url替换超链接。下面的代码片段应该可以做到这一点。

更新：此功能应检查用户是否登录（我的错，我忘了添加）

add_action( "the_content", "restrict_url_in_post_content" );
function restrict_url_in_post_content() {
    $loginUrl = sprintf( \'<a href="%s" class="some-class">%s</a>\', wp_login_url( get_the_permalink() ), __( "You need to login to view this link", "text_domain" ) );
    if( ! is_user_logged_in() )
        $the_content = preg_replace( "/<a[^>]*>([^<]+)<\\/a>/", $loginUrl, $the_content );
    return $the_content;
}

Update:

用途：[restricted]<a href="#">url</a>[/restricted]

function restricted_content( $atts , $content = null ) {
    $atts = shortcode_atts(
        array(
            \'show_login\'      => \'1\',
            \'message\'         => __( "You need to login to view this", "text_domain" ),
            \'login_redirect\'  => get_the_permalink(),
        ),
        $atts,
        \'restricted\'
    );
    $loginUrl = sprintf( \'<a href="%s" class="some-class">%s</a>\', wp_login_url( $atts["login_redirect"] ), $atts["message"] );
    if( is_user_logged_in() ) {
        return $content;
    } else if( $atts["show_login"] == 1 ) {
        return $loginUrl;
    } else {
        return $atts["message"];
    }
}
add_shortcode( \'restricted\', \'restricted_content\' );