Is there harm in outputting html vs. using echo?

Question

I have no idea really how to say this, but I can demonstrate it:

Content Title\";
}
?>

Answer 1

I appreciate all the feedback. :)

I did find out some issues when using the two different methods.

There does not appear to be any real issue here except that the formatting looks terrible on the source and the tedious nature of it.

Content Title";
}
?>

Using php this way can cause an error as such Warning: Cannot modify header information - headers already sent

Content Title

The headers error can possibly be solved by using php like so

Content Title

As to why and when the headers are sent, I am not completely sure...