php - limit subdirectories to logged in users -

how can below .htaccess ?

/sp/sitea => /check.php?page=sitea #no trailing forward slash /sp/sitea/ => /check.php?page=sitea #trailing forward slash /sp/sitea/index.php => /check.php?page=sitea/index.php #includes file /sp/siteb => /check.php?page=siteb  /sp/index.php , /sp/login.php => no redirect 

i want check db using php sitea see if user logged in , redirect /sp/sitea if not logged in site redirect /login.php

i tried .htaccess below , in sp folder, doesnt redirect, im not .htaccess master

rewriteengine on rewritecond %{request_uri} / rewriterule ^\/(.*)$ sp/check.php?path=$1 [l] 

i solved modified .htaccess file

rewriteengine on rewriteoptions maxredirects=2 rewritebase /  #dont check non pages rewritecond %{request_uri} !\.(gif|jpe?g|png|css|js)$  rewriterule ^(.*)/(.*)$ /sp/check.php?path=$1&path2=$2 [l,p] #p keeps address in bar after redirect 

check.php

<?php //htaccess redirects here sitepreview subdomains, authentication check , output html //cant redirect page or redirect loop session_start(); $dir =  $_get["path"]; $dir2 =  $_get["path2"]; //echo $dir;  if(!isset($_session['login_user'])){     header("location: /sp/index.php",true,301);     exit(); }else {     $name = $_session['login_user']["name"];     if($name == $dir) {         $homepage = file_get_contents($_server['document_root'] . "/sp/$dir/" .  (isset($dir2) && strpos($dir2, ".htm") ? $dir2 : "index.html") );         echo $homepage;     }     else {         header("location: /sp/index.php",true,301);         exit();     }     exit(); }