What are the potential differences in behavior between saving a form as an HTML file versus a PHP file in terms of retaining input data?

When saving a form as an HTML file, the input data will not be retained after submission because HTML files do not have the ability to process and store data. On the other hand, saving a form as a PHP file allows for the input data to be processed and stored using server-side scripting, enabling the retention of the input data even after submission. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $input_data = $_POST['input_field_name'];
    // Process and store input data as needed
}
?>

Keywords

HTML file PHP file form data input data behavior differences

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