How can PHP be used to dynamically extract data from a form on a webpage?

To dynamically extract data from a form on a webpage using PHP, you can use the $_POST superglobal array to access the form input values. By setting the form's action attribute to the PHP file that will handle the form submission, you can retrieve the form data and process it accordingly in the PHP script. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $username = $_POST['username'];
    $password = $_POST['password'];
    
    // Process the form data as needed
}
?>

<form method="post" action="process_form.php">
    <input type="text" name="username">
    <input type="password" name="password">
    <button type="submit">Submit</button>
</form>

Keywords

PHP form data extraction dynamic webpage

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