How can PHP scripts differentiate between manually entered and automatically filled inputs on a webpage?

PHP scripts can differentiate between manually entered and automatically filled inputs on a webpage by checking for the presence of hidden fields or specific values that are added by automated tools. One common approach is to include a hidden field in the form that is set by JavaScript when the user interacts with the input fields. This hidden field can then be checked in the PHP script to determine if the input was manually entered or automatically filled. 

<?php
if(isset($_POST['hidden_field']) && $_POST['hidden_field'] == 'manually_entered') {
    // Process manually entered input
} else {
    // Handle automatically filled input
}
?>

Keywords

PHP form inputs $_POST automation validation

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