Question

I am trying to learn Self Referencing Forms. I have read that a html form embedded in a php script is a self referencing form. I am still unable to pick the concept. Almost all the forms that I see in php codes are built with html. Is there something more specific about Self Referencing forms then just html forms being embedded in php script?

Answer 1

You probably mean something like this:

<?php
if (count($_POST)) {
echo 'You have submitted the string: '.$_POST['string'];
}
?>
<form action="" method="post">
<input type="text" name="string">
<button type="submit">Submit!</button>
</form>

The empty action attribute causes the browser to submit it to the same URL as the one that is loaded. Via count($_POST) we check whether the form was submitted and act accordingly.