isset function not working correctly - php

Question

I am trying to insert records into a table but I am facing a problem on the isset function. I am unable to process the code.
In the following code the else statement is executed instead of the isset function.
<?php
if (isset($_POST['submit'])) {
include_once 'dbh.inc.php';
$firstname = mysqli_real_escape_string($conn, $_POST['firstname']);
$surname = mysqli_real_escape_string($conn, $_POST['surname']);
$email = mysqli_real_escape_string($conn, $_POST['email']);
$username = mysqli_real_escape_string($conn, $_POST['username']);
$password = mysqli_real_escape_string($conn, $_POST['password']);
$cpassword = mysqli_real_escape_string($conn, $_POST['cpassword']);
$bdate = mysqli_real_escape_string($conn, $_POST['bdate']);
$gender = mysqli_real_escape_string($conn, $_POST['gender']);
if(empty($firstname) || empty($surname) || empty($email) || empty($username) || empty($password) || empty($cpassword) || empty($bdate) || empty($gender)) {
header("Location: ../index.php?index=empty");
exit();
} else {
$sql = "SELECT * FROM users WHERE username='$username'";
$result = mysqli_query($conn,$sql);
$resultCheck = mysqli_num_rows($result);
if ($resultCheck > 0) {
header("Location: ../index.php?index=username already taken");
exit();
} else {
// Hashing the password
$hashedPassword = password_hash($password, PASSWORD_DEFAULT);
//Insert users into the database
$sql = "INSERT INTO users (id, firstname, surname, email, username, password, bdate, gender) VALUES ('', '$firstname', '$surname', '$email', '$username', '$password', '$bdate', '$gender');";
mysqli_query($conn, $sql);
header("Location: ../profile.php");
exit();
}
}
} else {
header("Location: ../index.php?index=error");
exit();
}
Here is the front-end containing the "sign up" part:
<div class="container and">
<div class="row">
<div class="col-lg-6 pull-right">
<div class="panel panel-default">
<div class="panel-heading">
<h3>Create a new account.</h3>
</div>
<div class="panel-body">
<form id="loginform" action="includes/signup.inc.php" method="POST">
<div class="row">
<div class="form-group has-error col-md-6">
<input type="text" class="form-control" name="firstname" placeholder="First Name">
</div>
<div class="form-group has-error col-md-6">
<input type="text" class="form-control" name="surname" placeholder="Surname">
</div>
</div>
<div class="row padding-top-10">
<div class="form-group has-error col-md-12">
<input type="text" class="form-control" name="email" placeholder="Email Address">
</div>
</div>
<div class="row padding-top-10">
<div class="form-group has-error col-md-12">
<input type="text" class="form-control" name="username" placeholder="Username">
</div>
</div>
<div class="row padding-top-10">
<div class="form-group has-error col-md-12 padding-top-10">
<input type="password" class="form-control" name="password" placeholder="Password">
</div>
</div>
<div class="row padding-top-10">
<div class="form-group has-error col-md-12">
<input type="password" class="form-control" name="cpassword" placeholder="Confirm Password">
</div>
</div>
<div class="row padding-top-10">
<div class="form-group has-error col-md-12">
<h4> Birthday</h4>
<input type="date" class="form-control" name="bdate" value="birthdate">
</div>
</div>
<div class="row padding-top-10">
<div class="form-group has-error col-md-6 padding-top-10">
<div class="pull-right">
Male: <input type="radio" name="gender" value="male" />
</div>
</div>
<div class=" form-group has-error col-md-6 padding-top-10">
Female: <input type="radio" name="gender" value="female">
</div>
</div>
<div class="padding-top-10">
<button class="btn btn-success" name="submit">Create Account</button>
</div>
</form>
</div>
</div>
</div>
</div>
</div>

Answer 1

You missed the button type attribute which will be type="submit" If you didn't include this type attribute, the form will not submit data.
Your code:
<button class="btn btn-success" name="submit">Create Account</button>
It should be:
<button type="submit" class="btn btn-success" name="submit">Create Account</button>
If, this is not your problem, let me know! Thanks.