I was typing out lesson 19 in my SciTE pad and instead of the original lt;BRgt; & lt;HRgt; HTML and replaced it with the XHTML standard %lt;br /gt; & lt;hr /gt; but it wouldn't show them in the chatscript.php when I put it on the server. is PHP only for HTML standards and not XHTML?.

Please help me out PHP Web Masters,

thanks,
Vinnie.