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HTML code: 
<a href="login.php?action=logout" onclick="return confirm('ÄúÈ·¶¨ÒªÍ˳öÂð?');" target="_parent">Í˳ö</a>
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PHP code: 
<?php 
include ('config.php');
if($_GET['action']=='logout'){
   //echo  $_GET['action'];
   $admin_db->Get_user_out();
}
?>
PHP code: 
<?php 
function Get_user_out(){
    session_destroy();
    $this->Get_admin_msg('login.php','Í˳ö³É¹¦');
}
?>
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