PHP form validation for user registration - php

Question

Add User
* required field
<label for="firstname"> First Name</label>
<input type="text" name="firstname">
<span class="error">* <?php echo $nameErr;?></span>
<br><br>
<label for="lastname">Last Name</label>
<input type="text" name="lastname">
<span class="error">* <?php echo $nameErr;?></span>
<br><br>
<label for="email">Email</label>
<input type="text" name="email">
<span class="error">* <?php echo $nameErr;?></span>
<br><br>
<label for="Password">Password</label>
<input type="text" name="Password">
<span class="error">* <?php echo $nameErr;?></span>
<br><br>
<label for="usertype">User Type</label>
<span class="error">* <?php echo $genderErr;?></span>
<div>
<label for="Admin" class="radio-inline">
<input type="radio" name="user" id="Admin" value="Admin">Admin</label>
<label for="Member" class="radio-inline">
<input type="radio" name="user"id="Member" value="Member">Member</label>
<label for="Guest" class="radio-inline">
<input type="radio" name="user" id="Guest" value="Guest">Guest</label>
</div>
<br><br>
<label for="Status">Status</label>
<span class="error">* <?php echo $genderErr;?></span>
<div>
<label for="Active" class="radio-inline">
<input type="radio" name="Status" id="Active" value="Active">Active</label>
<label for="Inactive" class="radio-inline">
<input type="radio" name="Status" id="Inactive" value="Inactive">Inactive</label></div>
<br><br>
<input type="submit" name="submit" value="Submit">
<input type="reset" name="reset" value="Reset">
</form>
</div>
</div>
</div>
</section>
</body>
<?php
$firstname=$_POST['firstname'];
$lastname=$_POST['lastname'];
$email=$_POST['email'];
$Password=$_POST['Password'];
$user=$_POST['user'];
$Status=$_POST['Status'];
//database connect
$conn = mysqli_connect($localhost, $root,$"", $usert);
if($conn->connect_error)
{
die('Connection Failed:'.$conn>'connect-error');
}
else{
$stmt=$conn->prepare("insert into user(firstname,lastname,email,Password,user,Status)Values(?,?,?,?,?,?)");
$stmt->bind_param('sssssii',$firstname,$lastname,$email,$Password,$user,$Status);
$stmt->execute();
echo"Success!";
$stmt->close();
$conn->close();}
?>
hi, trying to make a simple form with PHP validation for user registration. When I am giving the input value is not working. I can't understand the error .please help! I am new to PHP. Please let me know the correction.enter image description here

Answer 1

I suggest you to go through these PHP documentations and get yourself familiar with how the database connection, queries etc work:
MySQLi
PDO
Looking at your code quickly, here are few places to start with:
a) The things like database credentials - you should define these, those should not come through PHP forms
b) Make sure on the variable names etc. For example you've used $user at the top and later used $username.
Start here:
a) Just write this much of code in a file and make sure database is connected properly:
$mysqli = new mysqli("localhost","my_user","my_password","my_db"); // write actual database credentials and database name
if ($mysqli -> connect_errno) {
echo "Failed to connect to MySQL: " . $mysqli -> connect_error;
exit();
} else {
echo "Database connected properly";
}
b) Next, on form submission page just see first if you are getting the values from form submission:
var_dump($_POST)
Hope it is helpful.

Answer 2

You haven't declared your DB credentials, it is just using random variables.
Replace the variables in your mysqli_connect() function with actual values/correct variables

Answer 3

you should use PDO for connect your php code to databes.read this document for help:
https://www.w3schools.com/php/php_mysql_connect.asp