Revision:
One of the most powerful features of PHP is the way it handles HTML forms. Once the user enters data and submits a form, the PHP superglobals $_GET and $_POST variables are used to collect that form-data.
example: "post"
codes:
<form action="trial-post.php" method="post">
<span>name:</span> <input type="text" name="name"/><br>
<span>email:</span> <input type="text" name="email"/>
<input type="submit"/>
</form>
<!-- When the user fills out the form above and clicks the submit button,
the form data is sent for processing to a PHP file named "trial.php".
The form data is sent with the HTTP POST method. -->
example: "get"
codes:
<form action="trial-get.php" method="get">
<span>name:</span> <input type="text" name="name"/><br>
<span>email:</span> <input type="text" name="email"/>
<input type="submit"/>
</form>
<!-- When the user fills out the form above and clicks the submit button,
the form data is sent for processing to a PHP file named "welcome-get.php".
The form data is sent with the HTTP GET method. -->
example: