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<?php
header("Content-type: text/html; charset=utf-8");
??session_start();//啟動(dòng)session
??// session_destroy();
??// die();
??// var_dump($_SESSION);
??// die();
??if(isset($_SESSION['username']) &&!empty($_SESSION['username'])){
???
??}
??else{
??? echo '<script language="JavaScript">;
????????? alert("尚未%E{?????????????? $chuxian = true; '] =$number; /alert("Addition successful!");location.href="header.php";</script>;';
?????????
??????? exit;
?// var_dump($_SESSION); //??? die ();
??
??
??>