我的php代码：

<?php $definedPages = array ( 'dir/site5', 'site1' );
                $page = (isset($_GET['page'])) ? $_GET['page'] : 'default.php';
                if(in_array($page, $definedPages)) {
                include "{$page}.php";
                } else {
                include "default.php";
                }
            ?>

我想从我网址中删除“index.php？page=”
我的链接现在如下所示：

example.pl/index.php?page=site1
example.pl/index.php?page=site2
example.pl/index.php?page=dir/site5
example.pl/index.php?page=dir/site6

我希望我的链接看起来像这样：

example.pl/site1
example.pl/site2
example.pl/dir/site5
example.pl/dir/site6

所有尝试但无效的代码：
代码1：

RewriteEngine On
RewriteRule ^(.*)$ index.php?page=$1&%{QUERY_STRING} [NC,L]

代码二：

RewriteEngine On

RewriteBase /

RewriteRule ^(Application|Library|Bin) - [F,L]

RewriteCond %{REQUESTFILENAME} !-f
RewriteCond %{REQUESTFILENAME} !-d

RewriteRule .* index.php?/page=$0 [PT,L]

代码三：

RewriteRule ^(.*)$ index.php?page=$1 [NC, QSA]

代码四：

RewriteCond %{THE_REQUEST} /index\.php\?page=([^&\s]+)\s [NC]
RewriteRule ^ /%1? [R=301,L,NE]
RewriteRule ^([^/]+)/?$ index.php?page=$1 [QSA,L,NC]

其他代码
我做错了什么？