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- <html>
- <head>
- <title>My first PHP website</title>
- </head>
- <body>
- <h2>Registration Page</h2>
- <a href="index.php">Click here to go back</a><br/><br/>
- <form action="register.php" method="post">
- Enter Username: <input type="text" name="username" required="required"/> <br/>
- Enter Password: <input type="password" name="password" required="required" /> <br/>
- <input type="submit" value="Register"/>
- </form>
- </body>
- </html>
- <?php
- if($_SERVER["REQUEST_METHOD"] == "POST"){
- $username = mysql_real_escape_string($_POST['username']);
- $password = mysql_real_escape_string($_POST['password']);
- $bool = true;
- mysql_connect("localhost", "root","1234") or die(mysql_error()); //Connect to server
- mysql_select_db("first_db") or die("Cannot connect to database"); //Connect to database
- $query = mysql_query("Select * from users"); //Query the users table
- while($row = mysql_fetch_array($query)) //display all rows from query
- {
- $table_users = $row['username']; // the first username row is passed on to $table_users, and so on until the query is finished
- if($username == $table_users) // checks if there are any matching fields
- {
- $bool = false; // sets bool to false
- Print '<script>alert("Username has been taken!");</script>'; //Prompts the user
- Print '<script>window.location.assign("register.php");</script>'; // redirects to register.php
- }
- }
- if($bool) // checks if bool is true
- {
- mysql_query("INSERT INTO users (username, password) VALUES ('$username','$password')"); //Inserts the value to table users
- Print '<script>alert("Successfully Registered!");</script>'; // Prompts the user
- Print '<script>window.location.assign("register.php");</script>'; // redirects to register.php
- }
- }
- ?>
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