php版本从5.3升级到5.4.x，这在登录验证中产生了问题

Question

这段代码给我致命错误：php版本升级后调用未定义的函数session_register（），请任何人帮助我

    $host="localhost"; // Host name 
    $username=""; // Mysql username 
    $password=""; // Mysql password 
    $db_name=""; // Database name 
    $tbl_name=""; // Table name 

    // Connect to server and select databse.
    mysql_connect("$host", "$username", "$password")or die("cannot connect"); 
    mysql_select_db("$db_name")or die("cannot select DB");

    // username and password sent from form 
    $myusername=$_POST['myusername']; 
    $mypassword=$_POST['mypassword']; 

    // To protect MySQL injection (more detail about MySQL injection)
    $myusername = stripslashes($myusername);
    $mypassword = stripslashes($mypassword);
    $myusername = mysql_real_escape_string($myusername);
    $mypassword = mysql_real_escape_string($mypassword);
    $sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";
    $result=mysql_query($sql);

    // Mysql_num_row is counting table row
    $count=mysql_num_rows($result);

    // If result matched $myusername and $mypassword, table row must be 1 row
    if($count==1){

        // Register $myusername, $mypassword and redirect to file "login_success.php"
        session_register("myusername");
    session_register("mypassword"); 
        header("location:operator.php");
        }
        else {
        header("location: http://");

        }
        ?>

此代码适用于每个目标页面operator.php致命错误：调用未定义函数session_register（）

<?php
session_start();
if(!session_register(myusername)){
header("location:login.html");
}

Answer 1

更改：

session_register("myusername");

至：

$_SESSION["myusername"] = $myusername;

对于所有其他通话，也是如此。

Answer 2

代替session_register

尝试使用$_SESSION

session_register已弃用： http : //www.php.net//manual/en/function.session-register.php