session_abort

To better understand this function you should execute this code first :<?php    // First of all choose your path , For e.g. C:/session    session_save_path('Your Path here !');        session_start();        // Define a Session Variable    $_SESSION['Key'] = 'value' ;        Var_dump(session_status() == PHP_SESSION_ACTIVE);        // Output : bool(True) , it means you have an open session !?>Then you should execute this code :<?php    // Choose the path that you used it in first part      session_save_path('Your path here');        session_start();        // If you want to close session and keep your original data in your path , you should use session_abort()    session_abort();        var_dump(session_status()== PHP_SESSION_ACTIVE);        // Output : bool(False) , it means your session closed .?>So if you have an open session , session_abort() will simply close it without effecting the external session data , so you can reload your data again from your path that you chose .

session_abort()  closes the current session and discards the changes applied to Session array in the current page  , it doesn't delete the session file let me explain with one example. page 1.php :<?phpsession_start();$_SESSION['city']="Sydney";echo "<a href=\"2.php\"> page2</a>";?>when you open this page , a session file is created on the server (to find out where session files are saved run "echo session_save_path()" )  with the name of session_id  and the content of  the variable :  sess_o22iabs75j93uhc7i4jf1lecjk  (file name)  city|s:6:"Sydney";               (content)if we go to 2.php containing this code :<?phpsession_start();$_SESSION['country']="Australia";echo session_encode();session_abort();session_start();echo "<br>".session_encode();?>when session_abort is executed , the session is closed and the change which here is the 'country' element of Session array is discarded . Output : city|s:6:"Sydney";country|s:9:"Australia";city|s:6:"Sydney";