php - Page Does Not Recognize SESSION -


i have come along not solve long. have created script in php unsets 1 single session variable, page stats session here code page :

    <?php session_start();  require_once("../header.php");     if($_session['user']) {      unset($_session['user']);         echo "you succesfully logged out.";         header("refresh:5; url=http://www.webmasteroutlet.com");       } else {             echo "you not logged in right now.";     } require_once("../footer.php"); ?>

that whole code on page. , prints out "you not logged in right now." $_session['user'] assigned true in login.php page , have session_start(); @ beginning of page right after <?php opening. session variable recognized @ other files php extension , single file not working on. tried 

<?php  session_start(); echo $_session['user']; ?>

and not print anything. skips line , nothing. doing wrong ? thank help. header.php code

<?php  session_start(); require("config.php"); // contains connection database , successful.  if(isset($_session['user'])==1){                     echo "<div id=\"topnav\" class=\"topnav\"><a href=\"#\" class=\"signup\"><span>".$_session['username']."</span></a>  <a href=\"http://www.webmasteroutlet.com/users/logout.php\" class=\"signup\"><span>logout</span></a></div>";                 }             else    if ($_session['admin']) {                     echo "<div id=\"topnav\" class=\"topnav\">"."<a href=\"#\" class=\"signup\"><span>".$_session['adminusername']."</span></a>  ";                     echo "<a href=\"http://www.webmasteroutlet.com/admin/adminlogout.php\" class=\"signup\"><span>logout</span></a></div>";                 }             else     if ( !isset($_session['user'])) {                     require ($_server['document_root']."/users/login.php");                 }   require("search.php"); ?>

i think need if set , make sure pass sessions data page looks unsetting


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