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Issue with PHP login & registration form without using a database
Pocket replied to Pocket's topic in PHP Coding Help
figured it out -
Could anyone help me making a login function that checks the txt document if user and pw exists/are correct? -and if they are, sends you to a logged in page. This is for a assignment which is why I have to store the information in a text document, I know it's unsafe. Also i know i should use $_Sessions but I'm not sure how to use it and where to put it. So far I have created the form which has 2 buttons one for registering and one for logging in. I have also created the registration function which checks the text file if the username already exists if not it will register it. <html lang="eng"> <head> <link rel="stylesheet" href="style.css"> <title>name</title> </head> <body> <div class="formdiv"> <h2>Log in or register</h2> <form action="" method="post"> <p>Username<p style="color:black">*</p> <input type="text" name="user" placeholder="Type in your username" required> <p>Password<p style="color:black">*</p> <input type="password" name="pw" placeholder="Type in your password" required> <?php if (isset($_POST['saveBtn'])){ $username = $_POST['user']; $password = $_POST['pw']; $error = register($username); if ($error == '') { echo "User: $username has been registered!<br/>"; } else echo $error; } ?> <input type="submit" name="saveBtn" value="Save new user"> <input type="submit" name="loginBtn" value="Login"> </form> </div> <?php // Registration function register($user){ $textError = ''; // Check and see if user exists $UserPassTxt = fopen("userpwd.txt","a+"); // Opens text doc rewind($UserPassTxt); while (!feof($UserPassTxt)) { $line = fgets($UserPassTxt); $tmp = explode(':', $line); if ($tmp[0] == $user) { $textError = "Username already exists!"; break; } } if ($textError == ''){ $hash = password_hash('', PASSWORD_DEFAULT); fwrite($UserPassTxt, "\n$user: $hash"); } fclose($UserPassTxt); // Closes txt doc return $textError; } ?> <?php //Login function login($user, $pass){ } ?> </body> ///here's my best attempt at the function <?php //Login $error = '0'; if (isset($_POST['loginBtn'])){ $username = $_POST['user']; $password = $_POST['pw']; $error = login($username,$password); } function login($user, $pass){ $errorText = ''; $validUser = false; $UserPassTxt = fopen("userpwd.txt","r"); rewind($UserPassTxt); while (!feof($UserPassTxt)) { $line = fgets($UserPassTxt); $tmp = explode(':', $line); if ($tmp[0] == $user) { if (trim($tmp[1]) == trim(password_hash('', PASSWORD_DEFAULT))){ $validUser= true; $_SESSION['user'] = $user; } break; } } fclose($UserPassTxt); if ($validUser != true) $errorText = "Not correct username or password"; if ($validUser == true) $_SESSION['validUser'] = true; else $_SESSION['validUser'] = false; return $errorText; } function logoutUser(){ unset($_SESSION['validUser']); unset($_SESSION['user']); } function checkUser(){ if ((!isset($_SESSION['validUser'])) || ($_SESSION['validUser'] != true)){ header('Location: index.php'); } } ?>