php connect to another webserver code example

Example 1: link to another page php

echo ' <a href="index1.php">page1</a>';
echo '<a href="page2.php">page2</a>';

Example 2: include a website in php file

Extremely insecure:
<?php include("http://www.othersite.com/filename.html"); ?>

What you probably want is:
<?php print file_get_contents("http://www.othersite.com/filename.html"); ?>