Что не так?

Начал изучать php и читаю книгу PHP for the web (fourth edition) некого Ларри Улмана.

При изучении возникла проблема.

Код html

Код (Text):

1. <h2>Registration Form <small class="text-muted">23.01.2018</small></h2><!-- Registration Form -->
2.  
3. <p>Please complete this form to register</p>
4.  
5.     <form action="handle_reg.php" method="post">
6.         <div class="form-group">
7.             <label for="InputEmail1">Email Address</label>
8.             <input type="email" name="email" class="form-control" id="InputEmail1" aria-describedby="emailHelp" placeholder="Enter email">
9.         </div>
10.         <div class="form-group">
11.             <label for="InputPassword1">Password</label>
12.             <input type="password" name="password" class="form-control" id="InputPassword1" placeholder="Password">
13.         </div>
14.         <div class="form-group">
15.             <label for="InputPassword2">Confirm Password</label>
16.             <input type="password" name="confirm" class="form-control" id="InputPassword2" placeholder="Confirm Password">
17.         </div>
18.         <div class="form-group">
19.             <label for="InputYear">Year You Were Born</label>
20.             <input type="text" name="year" class="form-control" id="InputYear" placeholder="YYYY" value="YYYY">
21.         </div>
22.         <div class="form-group">
23.         <label class="my-1 mr-2" for="inlineFormCustomSelectPref">Favorite Color</label>
24.         <select class="custom-select my-1 mr-sm-2" id="inlineFormCustomSelectPref">
25.             <option selected>Choose...</option>
26.             <option value="red">Red</option>
27.             <option value="yellow">Yellow</option>
28.             <option value="green">Green</option>
29.             <option value="blue">Blue</option>
30.         </select>
31.         </div>
32.         <div class="form-group">
33.         <div class="custom-control custom-checkbox">
34.             <input type="checkbox" name="confirm" class="custom-control-input" id="customCheck1">
35.             <label class="custom-control-label" for="customCheck1">I agree to the terms</label>
36.         </div>
37.         </div>
38.         <button type="submit" class="btn btn-primary">Register</button>
39.     </form>
40.  
41. <hr>

ПХП

Код (Text):

1. echo '<h1>Registration Results</h1>';
2.  
3. // Flag variable to track success
4. $okay = true;
5.  
6. // Validate email
7. if (empty($_POST['email'])) {
8.     echo '<div class="alert alert-danger" role="alert">Please enter your email address.</div>';
9.     $okay = false;
10. }
11.  
12. // Validate password
13. if (empty($_POST['password'])) {
14.     echo '<div class="alert alert-danger" role="alert">Please enter your password.</div>';
15.     $okay = false;
16. }
17.  
18. // Validate the two passwords for equality
19. if ($_POST['password'] != $_POST['confirm']) {
20.     echo '<div class="alert alert-danger" role="alert">Your confirmed password does not match to the original password.</div>';
21.     $okay = false;
22. }
23.  
24. // Validate the birth year {
25. if (is_numeric($_POST['year'])) {
26.     $age = 2018 - $_POST['year']; //Calculate age this year
27. }
28. else {
29.     echo '<div class="alert alert-danger" role="alert">Please enter the year You were born as four digits.</div>';
30.     $okay = false;
31. }
32.  
33. // Check that they were born before this year
34.  
35. if ($_POST['year'] >= 2018) {
36.     echo '<div class="alert alert-danger" role="alert">Either you entered your birth year wrong or you come from the future!</div>';
37.     $okay = false;
38. }
39.  
40. // If there no errors, print a success message
41.  
42. if ($okay) {
43.     echo "<p>You have been successfully registered (but not really).</p><p>You will turn $age this year.</p>";
44. }

Проблема конкретно вот с этим:

Код (Text):

1. // Validate the two passwords for equality
2. if ($_POST['password'] != $_POST['confirm']) {
3.     echo '<div class="alert alert-danger" role="alert">Your confirmed password does not match to the original password.</div>';
4.     $okay = false;
5. }

Даже при вводе двух одинаковых паролей все равно выводит сообщение о том что они не совпадают.

В чем причина? Заранее, спасибо.

 

Проблему решил, спасибо.