WHY IS THE STACK SO FAST?

array(10) { [0]=> object(stdClass)#5255 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "ioJkA7Mw2-U" ["related_video_title"]=> string(24) "WHY IS THE HEAP SO SLOW?" ["posted_time"]=> string(19) "1 год назад" ["channelName"]=> string(11) "Core Dumped" } [1]=> object(stdClass)#5228 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "hwyRnHA54lI" ["related_video_title"]=> string(35) "The size of your variables matters." ["posted_time"]=> string(19) "1 год назад" ["channelName"]=> string(11) "Core Dumped" } [2]=> object(stdClass)#5253 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "xFMXIgvlgcY" ["related_video_title"]=> string(23) "ARRAYLIST VS LINKEDLIST" ["posted_time"]=> string(19) "1 год назад" ["channelName"]=> string(11) "Core Dumped" } [3]=> object(stdClass)#5260 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "3X93PnKRNUo" ["related_video_title"]=> string(33) "CONCURRENCY IS NOT WHAT YOU THINK" ["posted_time"]=> string(19) "1 год назад" ["channelName"]=> string(11) "Core Dumped" } [4]=> object(stdClass)#5239 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "aQ2yoELiSUU" ["related_video_title"]=> string(146) "Конфликт России и Азербайджана | Заступится ли Путин за россиян (English subtitles) @Max_Katz" ["posted_time"]=> string(21) "3 часа назад" ["channelName"]=> string(19) "Максим Кац" } [5]=> object(stdClass)#5257 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "e5g8eYKEhMw" ["related_video_title"]=> string(41) "What Happens When a Program Calls Sleeps?" ["posted_time"]=> string(25) "2 месяца назад" ["channelName"]=> string(11) "Core Dumped" } [6]=> object(stdClass)#5252 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "TX9Zs_bmNZk" ["related_video_title"]=> string(48) "Гуманитарии сломали числа" ["posted_time"]=> string(21) "1 день назад" ["channelName"]=> string(32) "Филолог всея Руси" } [7]=> object(stdClass)#5262 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "M9HHWFp84f0" ["related_video_title"]=> string(48) "Why Are Threads Needed On Single Core Processors" ["posted_time"]=> string(27) "7 месяцев назад" ["channelName"]=> string(11) "Core Dumped" } [8]=> object(stdClass)#5238 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "NYTViB69qtA" ["related_video_title"]=> string(48) "Плавим Алюминий правильно" ["posted_time"]=> string(25) "3 недели назад" ["channelName"]=> string(23) "Лёха Технарь" } [9]=> object(stdClass)#5256 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "zP0iIkkQx0M" ["related_video_title"]=> string(51) "Михаил Хазин & Стив Дудник" ["posted_time"]=> string(23) "7 часов назад" ["channelName"]=> string(38) "Закон и порядок в США" } }