Downloading webpages

I'm attempting to download a webpage (http://finance.yahoo.com/q?s=erts), using the following code $fp=fopen($quote_url,'rb'); $contents=fread($fp,500000); fclose($fp); but it only downloads part of the webpage (1460 bytes to be exact). Putting the fread inside a while loop and reading until 0 bytes read eventually gets the entire page. Anyone know the reason for this, and how to fix it?