失去了會話重定向

Question

session_start(); 
//login page 
if(mysql_num_rows($result) != '0'){ // If match. 

     session_register("username"); // Craete session username. 

     header("location:admin/admin.php"); // Re-direct to admin.php  
    exit; 

    }else{ // If not match. 

     $message="Please Incorrect your account !"; 

    } 

登錄成功去admin.php的

session_start(); 

回聲$ _SESSION //以後[ '用戶名'];

Answer 1

嘗試設置變量：

if (mysql_num_rows($result)) { 
    $_SESSION['username'] = "something"; 
    header(....); exit; 
} // etc