Zend actually recommend that you don't place the ending PHP tag ?> because that way it prevents any white-spacing creeping in after you've ended the ?> tag.

I think we've all experienced that problem before. Usually the first thing to detect a white-space is the session class, which is unable to work when output has been started because the session class wishes to send HTTP headers. Often is the case that your document is as follows, and you spend all your time trying to find the white-space:

"?> "

Quite a few IDEs now will actually trim the document before saving and thus eliminating that issue. With Zend's recommendations, however, I can only feel one way at the moment, and that my document seems incomplete without the closing PHP tag.

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