How can PHP variables be accessed from a form using the POST method?

To access PHP variables from a form using the POST method, you need to use the $_POST superglobal array in PHP. This array contains key-value pairs of form data submitted using the POST method. You can access the value of a form input field by using its name as the key in the $_POST array.

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $name = $_POST['name'];
    $email = $_POST['email'];
    
    // Now you can use $name and $email variables in your PHP code
}
?>

<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
    <input type="text" name="name">
    <input type="email" name="email">
    <button type="submit">Submit</button>
</form>