php会话注册并在另一个页面中获取值

Question

I am searching for a code that let the username of the account shows in welcome.php

my checklogin.php code is here :

 <?php
            mysql_connect('localhost', 'root', '');
            mysql_select_db('bloodneeded');


            $username = $_POST['uname'];
            $password = $_POST['pass'];


            $sql = "SELECT * FROM welcome WHERE username= '$username' AND  password= '$password'";
            $result = mysql_query($sql);
            if ($result) {

                $count = mysql_num_rows($result);

                if ($count == 1) {

                    session_register("uname");
                    session_register("pass");
                    header("location:Welcome.php");
                } else {

                    echo "Wrong Username or Password";
                }
            }
            ?>

and the welcome.php code is here :

<p id="form1"> Welcome  </p>

all i want is to "echo" near welcome the name of the user logged in can ayone please help me ?

Answer 1

Use of session_register() is deprecated.

Instead, use $_SESSION[] Superglobal.

<?php

//You must write
if (!isset($_SESSION)) 
{
    session_start();
}
//on very first lines of your pages.


        mysql_connect('localhost', 'root', '');
        mysql_select_db('bloodneeded');


        $username = $_POST['uname'];
        $password = $_POST['pass'];


        $sql = "SELECT * FROM welcome WHERE username= '$username' AND  password= '$password'";
        $result = mysql_query($sql);
        if ($result) {

            $count = mysql_num_rows($result);

            if ($count == 1) {

                $_SESSION["uname"] = $_POST['uname'];
                //$_SESSION["pass"] = $_POST['pass']; No need to store password I think.
                header("location:Welcome.php");
            } else {

                echo "Wrong Username or Password";
            }
        }
        ?>

After getting the username

<p id="form1"> Welcome <?php echo $_SESSION["uname"]; ?> </p>