PHP Data Structures (and the impact of PHP 7 on them)

verry clear, easy to understand. discover some new stuff like some pecl extension that I never hearth of. thanks

Tough stuff when you've barely waken up, but interesting nonetheless. PECL classes I never heard before + examples on how to use it. All in all a good talk.

Good to see some performance comparisons between SPL datastructures and userland equivalents with arrays for both PHP5 and PHP7, showing how they've changed between the two major versions. Also interesting was the Set datastructure and a numer of approaches to implementing it in userland PHP: I'd have liked to have seen some mention of SPLHeap as well; but overall a good reminder of just what is built into PHP already, the performance/memory benefits; and the differences between 5 and 7.

New classes, new insights and nicely presented examples/charts so the the difference between php5 & php7.

Quite tough information to present in an interesting way, but still some pretty good insights. Good information on the various structures and how to use the array-type with each concept. Surprising results on the benchmarks.

very insightful, nicely presented!

Very in-depth talk about PHP Data Structures. Interesting to hear about benchmarks of said data structures.

Nice clear talk, learned much about alternatives for 'heavy' functions. It was also nice to see the differences between PHP 5.6 and PHP 7.

Very helpful talk, comprehensive, clear comparisons, and very interesting!