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PHP Buffer Flushing , Is that necesery?


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Like most things, it's neither all good or all bad.  Any benefits gained by flushing the buffer are dependent on what kind of architecture you're using.  You won't see much benefit in an OOP/MVC environment, for example, as all processing is done before anything is rendered.  Flushing, in that case, is pointless as the only logic left to perform at that stage would be simple view logic - conditionals (if/else) and loops.


Also, depending on where you flush (most people recommend at the <head> of the document), you'll remove the ability to use HTTP headers, including redirection headers.


All in all, it seems like the kind of micro-optimization that may be better addressed through caching and compression.

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