Tim Starling wrote:
> Given this, sometimes it's easy to forget that PHP is pathologically
> memory hungry, to the point of making simple tasks difficult or
> impossible to perform in limited environments. It's the worst language
> I've ever encountered in this respect. An array of small strings will
> use on the order of 200 bytes per element. An array of integers will use
> not much less. A simple object (due to being based on the same
> inefficient data structure) may use a kilobyte or two.

A zval is around 64 bytes.  So, to use 200 bytes per string element,
each of your strings must be around 136 chars long.

For me, working in super high-load environments, this was never an issue
because memory was always way more plentiful than cpu.  You can only
slice a cpu in so many slices.  Even if you could run 1024 concurrent
Apache/PHP processes, you wouldn't want to unless you could somehow
shove 64 cpus into your machine.  For high-performance high-load
environments you want to get each request serviced as fast as possible
and attempting to handle too many concurrent requests works against you
here.

-Rasmus

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