[PHP-DOC] Re: [PHP-DEV] new manual chapter suggestion From: Alexander Merz (alexander.merz <email protected>)
Date: 07/29/01

> - use echo "aaa" , "bbb", "ccc" instead of echo "aaa" . "bbb" . "ccc"
> because with the later you use more memory [Jim]
> - echo is a little bit faster then print [Rasmus]
> This would make a new chapter, with some nifty tips
> about how you can improve the performance of your
> programs.
Handle some 'hints' with care. This is typical "assembler thinking", where you
had a list of the executions time of every command next to the keyboard. PHP is
a high-level interpreter language and the runtime of a command depends not of
the architecture of the processor. The speed or memory usage of a functions
depends on the implementation, which can differs from version to version.

echo "aaa", "bbb" saves at the moment memory, but can you guarantee, that it
saves memory in 4.1?

Such a chapter would brings beginner to look for time and memory saving
functions, instead of thinking about the best implementation of a algorithm,
which could better improve the performance then a bad implemention 'tuned' with
some nifty tips, independend of the used PHP-version.

I see some sources, where beginners used twenty str_replace's instead of one
preg_replace, because somebody said to them str_replace is faster then
preg_replace...