How can you structure your PHP code to handle form creation and form evaluation on separate pages effectively?

When handling form creation and form evaluation on separate pages in PHP, it is important to ensure that the form data is properly passed between the pages. One common approach is to use session variables to store the form data temporarily until it is evaluated on the next page. This allows for a clean separation of concerns and makes the code more maintainable. 

// form_creation.php

session_start();

// Process form submission and store data in session
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $_SESSION['form_data'] = $_POST;
    header("Location: form_evaluation.php");
    exit;
}

// Form creation HTML
echo '<form method="post" action="">';
echo '<input type="text" name="username" placeholder="Username">';
echo '<input type="password" name="password" placeholder="Password">';
echo '<button type="submit">Submit</button>';
echo '</form>';
```

```php
// form_evaluation.php

session_start();

// Retrieve form data from session
$formData = $_SESSION['form_data'];

// Evaluate form data
$username = $formData['username'];
$password = $formData['password'];

// Form evaluation logic
if ($username == "admin" && $password == "password") {
    echo "Login successful!";
} else {
    echo "Login failed. Please try again.";
}

// Clear form data from session
unset($_SESSION['form_data']);

Keywords

PHP form creation form evaluation separate pages code structure

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