# SPL and foreach Optimized

- Thread: https://externals.io/message/1974
- Original archive: https://news-web.php.net/php.internals/1974
- Started by marcus.boerger@t-online.de on 2003-05-25T02:12:01+00:00
- Messages: 1
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## #1974 — marcus.boerger@t-online.de — 2003-05-25T02:12:01+00:00

URL: https://externals.io/message/1974#1974

Hi all,

during saturday i've spent some time to optimize SPL. For my testcase it is 
now 3% faster then
the compareable while code. If OPTIMIZED_ARRAY_CONSTRUCT is defined as in 
current CVS
then the difference is about 3.5%. Looking at the profiling results on that 
.5% difference i was
directed to the emalloc change posted earlier. This will bring some more % 
(hopefully >5%).

SPL uses op1->u.EA.type as an info pointer (called spl_foreach_proxy) to 
keep track of its
current index and cache the . This can also be used for normal foreach and 
make the
array copying there obsolete, which also allows some more "code tricks" (as 
already requested/
bugged on bugs.php.net).

Integrating SPL in the engine would also nearly completly drop the 
performance loss of the hooks
which is less then 0.5% atm (foreach, array not measured yet).

The optimization used with OPTIMIZED_ARRAY_CONSTRUCT could also be used for 
normal
foreach.

regards
marcus


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