php-ds-array-benchmark

A php8.2 benchmark comparison between native Array, SplFixedArray and Vector from php-ds (data-structures extensions).

Usage

./vendor/bin/phpbench run tests/Benchmark --report=aggregate --retry-threshold=5

Result

Without json_encode

benchmark	subject	set	revs	its	mem_peak	mode	rstdev
ArrayBench	benchArray		10	3	1.126gb	492.811ms	±1.31%
ArrayBench	benchSplFixedArray		10	3	1.087gb	537.613ms	±2.15%
ArrayBench	benchDsVector		10	3	1.084gb	1,021.727ms	±0.19%

With json_encode

benchmark	subject	set	revs	its	mem_peak	mode	rstdev
ArrayBench	benchArray		10	3	1.405gb	1,565.699ms	±1.01%
ArrayBench	benchSplFixedArray		10	3	1.600gb	2,087.920ms	±0.71%
ArrayBench	benchDsVector		10	3	1.388gb	2,137.282ms	±0.61%

Conclusion

• Native array is the best data structure for lists, and outperforms the other methods in both time complexity and overall resource usage.
• SplFixedArray is simply unnecessary. It has no real value over array.
• DataStructures extension was once a great improvement for php7, but not so much anymore, at least for simple lists. Certain data structure manipulations can be still more efficient with php-ds.