PHP output XML must be header problem solving method

XML long and TXT files are too similar, so I am the sum of txt confused.

The code is as follows	Copy Code
Echo ' <?xml version= "1.0" encoding= "UTF-8"?> <sitemap> <loc>http://www.111cn.net/</loc> <lastmod>2013-01-22T11:00:18+08:00</lastmod> </sitemap> '; Exit

Such a piece of code, dead and alive the output of XML can not be validated through XML.

Error:object # has no method ' load '

The last time I checked, it was just like a file in 1.xml.

The code is as follows	Copy Code
<?xml version= "1.0" encoding= "UTF-8"?> <sitemap> <loc>http://www.111cn.net/</loc> <lastmod>2013-01-22T11:00:18+08:00</lastmod> </sitemap>

It would be nice to add a header. It's been a couple of hours.

code is as follows	copy code
<?php Header ("Content-type:text/xml"); Echo ' <?xml version= "1.0" encoding= "UTF-8" <sitemap> <loc>http://www.111cn.net/< /loc> <lastmod>2013-01-22t11:00:18+08:00</lastmod> </sitemap> '; exit;