[Solved] clear all php sessions by clicking on link

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<a href="https://stackoverflow.com/questions/30121039/index.php?clearsession=true">Back</a>

php on top of page: 

<?php 

if($_GET['clearsession']){
    session_start();        
    session_unset();
    session_destroy();
    session_write_close();
}

1

solved clear all php sessions by clicking on link