simple rss feed

[Avel]

i am trying to make a simple rss feed but the problem is when i run the file is says would you like to open rss.php ...here is the code maybe im doing something wrong? i have put it in this format just to see it work.\[code\]<?phpheader('Content-Type: application/rss+xml; charset=utf-8');?><?xml version='1.0' encoding='ISO-8859-1'?><rss version='2.0'><channel><title>feed title</title><description>this is my example</description><link>http://localhost:8888/redline</link><copyright>Copyright (C) 2010 sarmenhb</copyright><item><title>Example 1</title><description>This is the description of the first example.</description><link>http://www.example.com/example1.html</link><pubDate>Mon, 29 Dec 2008 22:10:00 -0600</pubDate></item><item><title>Example 1</title><description>This is the description of the first example.</description><link>http://www.example.com/example1.html</link><pubDate>Mon, 29 Dec 2008 22:10:00 -0600</pubDate></item><item><title>Example 1</title><description>This is the description of the first example.</description><link>http://www.example.com/example1.html</link><pubDate>Mon, 29 Dec 2008 22:10:00 -0600</pubDate></item><item><title>Example 1</title><description>This is the description of the first example.</description><link>http://www.example.com/example1.html</link><pubDate>Mon, 29 Dec 2008 22:10:00 -0600</pubDate></item><item><title>Example 1</title><description>This is the description of the first example.</description><link>http://www.example.com/example1.html</link><pubDate>Mon, 29 Dec 2008 22:10:00 -0600</pubDate></item> </channel></rss>\[/code\]