Here’s an HTML form

<!-- ./index.php -->
<form action="contact.php" method="post">
  <label for="contactName">Name </label>
  <input type="text" id="contactName" name="contactName" />
  <input type="submit" value="Submit">
</form>

• action attribute decides where the data goes, usually another file/page. (You can submit it to the same page as well if you’re going to process it on the same page. In this case you won’t be redirected to another page)
• method attribute decides the HTTP method/verb
• name attribute is what you’ll use to access this data with $_POST
• the id of an inout is used with the for of a label to associate the two together

Here’s the PHP page you’ll send the data to

<!-- ./contact.php -->
<?php
	$name = $_POST["contactName"];
	echo "Hello " . $name;
?>

• the posted data is accessed with a special variable called $_POST. You access posted values with their name.