In PHP, information can be passed from Page 1 to Page 2 using a $_GET or $_POST request. For example, lets say you have a Click here hyperlink on www.example.com/index.php.

GET

First, the Click here hyperlink will need to be configured to pass data to page 2. 

<a href='page2.php?id=1'> Click here </a>

In this example, when clicking on the Click here hyperlink, you will be redirected to Page 2, and the URL will contain ?id=1. On page2.php, the following PHP can be used to GET the data from the URL.

<?php
   $id = $_GET['id'];
   echo $id;
?>	

1 will be displayed on the page.