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Asked: 2026-05-24T04:09:31+00:00

I am a beginner to PHP and i want to make a static method

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I am a beginner to PHP and i want to make a static method that if its argument is empty it’ll show the message. If not, it’ll set the given message to a static variable for later use. But when i call the method to set the message, and then call it in another page to show the message. Nothing appear.

Here’s my portion of code for this “session.php” :

   class Session {

            public static $message; 


            public static function notify($message = ""){
                if(!empty($message)){
                    self::$message = $message;                    
                } else {                        
                    return self::$message;
                }
            }
}

    $session = new Session();

“add_user.php” : 

<?php       
    require_once '../helper/session.php';       
?>

<?php
    if (isset($_POST["submit"])) {        

        $user->username = $_POST["username"];
        $user->password = $_POST["password"];
        $user->first_name = $_POST["first_name"];
        $user->last_name = $_POST["last_name"];
        if($result = $user->add_user()){
            Session::notify("New user added");
            redirect_to("../view/login.php");
        } else { Session::notify("Cannot add new user"); }

    }
?>

“login.php” :

<?php 
    require_once "../control/add_user.php";
?>

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
        <link rel="stylesheet" href="../stylesheet/login.css" />
        <title>Welcome to Harmony</title>
    </head>

    <body>
        <header>
            <h2>Harmony</h2>
        </header>

        <section>
            <div id="formStyle">
                <h3>Login or Signup:</h3>
                <form action="login.php" method="post">

                    <p><label for="username">Username: </label>
                        <input type="text" name="username" value="" placeholder="Username"/></p>

                    <p><label for="password">Password: </label>
                        <input type="text" name="password" value="" placeholder="Password"/></p>

                    <input type="submit" name="submit" value="Submit" />
                    <input type="button" name="sign_up" value="Sign up" onClick="parent.location='add_user.php'">
                </form>
                            <?php echo Session::notify();  ?>
            </div>
        </section>
    </body>
</html>
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1 Answer

  1. Editorial Team

    You aren’t really writing to the session, now are you?
    You should create two more methods for getting and setting the variables in the actual session. After the redirect, your message dissapears, because it is only saved on script execution.

    function set_notification($message) {
$_SESSION['notification'] = $message; }
function get_notification() {
if(!empty($_SESSION['notification'])) {
return $_SESSION['notification']; }

    Something like that 🙂

    Of course, for sessions to work, you should do a session_start() call in the beginning of the script. read more about them here

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