PHP header Location works in the middle of HTML -

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I have a problem understanding how a header ("Location: http://www.google. Com / "); & lt; Body & gt; can work in the middle.
Should not be an error because the header has already been sent due to HTML output, & lt ;? Php ...? & Gt; The way before starting the part.

I am referring to the warning header information can not be modified - already sent headers ... I hope to receive.

I'm testing it on my local PHP Dev environment (Apache / 2.2.15 (Win32) PHP / 5.3.2).

Here's an example: 

  & lt; Html & gt; & Lt; Top & gt; & Lt; / Head & gt; & Lt; Body & gt; & Lt ;? Php header ("location: http://www.google.com/"); ? & Gt; & Lt; / Body & gt; & Lt; / Html & gt;

Any ideas? Thank you.

If you have automatic buffering enabled in php.ini, you can use any time before it The headers can actually open the output.


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