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Advanced PHP Programming by George Schlossnagle

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Chapter 9. External Performance Tunings

In any tuning endeavor, you must never lose sight of the big picture. While your day-to-day focus may be on making a given function or a given page execute faster, the larger goal is always to make the application run faster as a whole. Occasionally, you can make one-time changes that improve the overall performance of an application.

The most important factor in good performance is careful and solid design and good programming methodologies. There are no substitutes for these. Given that, there are a number of tunings you can make outside PHP to improve the performance of an application. Server-level or language-level tunings do not make up for sloppy or inefficient coding, but they ensure that an application ...

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