Throwing the content of a file directly to the browser (echo a whole file?)

This should be an easy one:
Which is the most effective way (short code, less server processing) to send a whole file to the web client?
What I want to do is this:
Have 4 files: header.html, body1.html, body2.html,footer.html
What I want is depending on some condition the user gets a page which is header+body1+footer or if not header+body2+footer.
Using include or require in PHP includes a file in the current script, which will force me to have humdreds of "echo"s in each of the 4 files to output the HTML - definitely not praclical.
Probably a way would be to read each line-by-line and echo each read line, but I want to know if there is any intelligent and straightforward solution?
celeron128Asked:
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DoppyNLCommented:
you can also include html files....

so you can do this:

---- somefile.html
<html>
<head><title>HEAD!!!</title></head>
<body>
-----


---somepage.php
<?php
include('somefile.html');
print('do some other stuff');
print('</body></html>');
?>
-----


or partial php partial html files is also possible. :)

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