Using Notepad++, comments `//` in PHP stops the script
===

The issue started with this question: http://stackoverflow.com/questions/11701179/why-does-this-session-post-fail

After some time I found that my problem described in that question is caused by the comment `//` in PHP (as described in the last update in the question).

I suspect my editor Notepad++ to have some kind of influence on this.

As an example, if I write:

    <?
    echo "test1<br>";
    echo "test2<br>";
    echo "test3<br>";
    // Comment
    echo "test4<br>";
    echo "test5<br>";
    ?>
    <?
    echo "test6<br>";
    echo "test7<br>";
    echo "test8<br>";
    ?>

everything after the comment `// Comment` inside the current `<?...?>` is ignored. The output to the above is thus:

> test1  
> test2  
> test3  
> test6  
> test7  
> test8

The other kind of comments `/*...*/` works fine.

Strangely it only happens on comments that I edit or create. All other untouched comments do no harm. There might be some Notepad++ setting causing this that I don't know of. If have experienced before that "invisible" things happen when you fiddle around with the program, so I might have done something wrong at somepoint.

Any suggestions? 