Why does the include on a PHP page occupy one line? Solutions

Why does the include on a PHP page occupy one line?
Add an include ("func/func.php") to the page code header, specifically used to invoke the func/func.php inside the function, but each time you open the page, there will always be more than one row, and the background is green, very bad to see, how is this going?
After debugging, put the include ("func/func.php"); Delete just fine, what should I do?

------Solution--------------------
notepad++ converting files to UTF8 encoding without BOM
------Solution--------------------
Explore

Just found that if you open under IE, there is no problem, my machine also has a greenbrowser and Sogou browser, the following two open will appear this situation, how to do?

