OK we will show 2 basic examples, the first grabs a page of this site we have created and the second will grap google's homepage.

A word of warning do not use this in the second format unless you have permission from the website owner , the way I see this working is if you had several sites and perhaps wanted to display content from one of them in another.

Example1

<?php
$ch = curl_init("http://www.programmershelp.co.uk/curltest.php");
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_exec($ch);
curl_close($ch);
?>

see it in action here

Example2

<?php
//the site or URL to get
$ch = curl_init("http://www.google.com/");
//set the options for the transfer
curl_setopt($ch, CURLOPT_HEADER, 0);
//execute the session
curl_exec($ch);
//free up system resources !!IMPORTANT
curl_close($ch);
?>

see it in action here