.htaccess - PHP sessions in HTACCESS - timeout -

i'm debugging infinite loop problem in php in "logout" routine.

if($_session) {     session_unset();     session_destroy(); } sleep(1); header('7location: http://accounts.domain.com/'); exit; 

in main / initial.inc.php script have :-

$sess=0; $sess=$_session['loggedin']; foreach($_session $asw => $asd) {     $logrep.="sessw '$asw' '$asd'\n"; }  if($sess>0) {     if($sess<$ty)     {         $logrep.="is timed out - logging out\n";         header('location: http://accounts.domain.com/logout/');         exit; 

theres bit more code i've taken out - in 'logout' script ive got destroy / unset etc -

but when redirects inward script, sessions still exist ? - & determines i'm timed out, & redirects logout routine.

query: there fool-proof way remove / eliminate sessions ?

query :-

$previous_name = session_name("name"); session_save_path("$directory"); session_start(); 

is there php.ini line can use, replace session_name all/any php scripts using same name ? (just in case there scripts not using named session.)

edit :-

if use

    session_unset();     session_destroy(); 

will destroy all sessions ? or currently-named 1 ? (i suspect of scripts aren't using named session)

ps - scripts in different directories / subdomains.

edit 2 :-

ive chanmged script :-

     $sess=0;      $logrep.="sess '$sess'\n";      $logrep.=var_dump( $sess=$_session['loggedin']);      $logrep.="sessnow2 - '$sess'\n\n\n";      $text.="logged in time $sess\n";      $logrep.="\nsess = $sess\n";      $temp2=time();      $temp1=($sess-$temp2);      $logrep.="iff sess $sess > time $time - temp $temp1\n";      if($sess>0)      {        - redirect log out routine ....  

(some code removed)

result :-

    old sess - '1391680203'     sess '0'     sessnow2 - '1391680203' 

apparently, sessions not being deleted / removed.

i guess file 'initial.inc.php' included in top of every scripts.

on logged out page, have :

session_unset(); session_destroy();

at stage, session destroyed.

header('location: http://accounts.domain.com/');

which executes 'initial.inc.php';

i assume have @ start of initial.inc.php 'session_start();, because have

$sess=$_session['loggedin']; 

and doesn't seems throws warning because of session being missing. session re-created in initial.inc.php file.