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ad5cdb2 Mar 27, 2014
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<title>My first PHP website</title>
<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"/>
$username = mysql_real_escape_string($_POST['username']);
$password = mysql_real_escape_string($_POST['password']);
$bool = true;
mysql_connect("localhost", "root","") 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